How can one individual have two different biological signatures?












18














A detective is investigating a series of grisly murders in New York. The bodies of the victims seem to have been ripped apart by a inhumanly strong person. He has narrowed down the list of suspects to one individual, Henry Jekyll, a scientist working out of a lab in Queens.



He secretly follows Jekyll in order to gather evidence against him. On one night, he sees Jekyll drink some concoction taken from his coat, which turns him into a freakishly large man, and kill a prostitute. He collects DNA samples of the man (blood, hair, fingerprints), but results don't provide a match for Jekyll. The detective obtains a warrant to search the doctor's premises, locating a diary describing his actions as of late. The journals detail the doctor's experiments of how he invented a concoction that allows him to bring his darker nature to the surface, allowing him to indulge in his vices without guilt or fear of discovery.



If the doctor and this other person are the same, how can it be that they don't share the same DNA?






science-based science-fiction crime







share|improve this question




















  • 3




    Sounds very original :-P
    – Rand al'Thor
    Dec 13 '18 at 15:57






  • 1




    fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
    – Matthew Gauthier
    Dec 13 '18 at 17:38






  • 8




    If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
    – Chloe
    Dec 13 '18 at 22:11








  • 7




    If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
    – MJ713
    Dec 13 '18 at 23:57






  • 2




    Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
    – Mazura
    Dec 14 '18 at 0:58
















18














A detective is investigating a series of grisly murders in New York. The bodies of the victims seem to have been ripped apart by a inhumanly strong person. He has narrowed down the list of suspects to one individual, Henry Jekyll, a scientist working out of a lab in Queens.



He secretly follows Jekyll in order to gather evidence against him. On one night, he sees Jekyll drink some concoction taken from his coat, which turns him into a freakishly large man, and kill a prostitute. He collects DNA samples of the man (blood, hair, fingerprints), but results don't provide a match for Jekyll. The detective obtains a warrant to search the doctor's premises, locating a diary describing his actions as of late. The journals detail the doctor's experiments of how he invented a concoction that allows him to bring his darker nature to the surface, allowing him to indulge in his vices without guilt or fear of discovery.



If the doctor and this other person are the same, how can it be that they don't share the same DNA?






science-based science-fiction crime







share|improve this question




















  • 3




    Sounds very original :-P
    – Rand al'Thor
    Dec 13 '18 at 15:57






  • 1




    fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
    – Matthew Gauthier
    Dec 13 '18 at 17:38






  • 8




    If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
    – Chloe
    Dec 13 '18 at 22:11








  • 7




    If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
    – MJ713
    Dec 13 '18 at 23:57






  • 2




    Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
    – Mazura
    Dec 14 '18 at 0:58














18












18








18


3





A detective is investigating a series of grisly murders in New York. The bodies of the victims seem to have been ripped apart by a inhumanly strong person. He has narrowed down the list of suspects to one individual, Henry Jekyll, a scientist working out of a lab in Queens.



He secretly follows Jekyll in order to gather evidence against him. On one night, he sees Jekyll drink some concoction taken from his coat, which turns him into a freakishly large man, and kill a prostitute. He collects DNA samples of the man (blood, hair, fingerprints), but results don't provide a match for Jekyll. The detective obtains a warrant to search the doctor's premises, locating a diary describing his actions as of late. The journals detail the doctor's experiments of how he invented a concoction that allows him to bring his darker nature to the surface, allowing him to indulge in his vices without guilt or fear of discovery.



If the doctor and this other person are the same, how can it be that they don't share the same DNA?






science-based science-fiction crime







share|improve this question















A detective is investigating a series of grisly murders in New York. The bodies of the victims seem to have been ripped apart by a inhumanly strong person. He has narrowed down the list of suspects to one individual, Henry Jekyll, a scientist working out of a lab in Queens.



He secretly follows Jekyll in order to gather evidence against him. On one night, he sees Jekyll drink some concoction taken from his coat, which turns him into a freakishly large man, and kill a prostitute. He collects DNA samples of the man (blood, hair, fingerprints), but results don't provide a match for Jekyll. The detective obtains a warrant to search the doctor's premises, locating a diary describing his actions as of late. The journals detail the doctor's experiments of how he invented a concoction that allows him to bring his darker nature to the surface, allowing him to indulge in his vices without guilt or fear of discovery.



If the doctor and this other person are the same, how can it be that they don't share the same DNA?






science-based science-fiction crime




science-based science-fiction crime






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Dec 13 '18 at 14:50









terdon

1195




1195










asked Dec 13 '18 at 11:46









Incognito

5,25864776




5,25864776








  • 3




    Sounds very original :-P
    – Rand al'Thor
    Dec 13 '18 at 15:57






  • 1




    fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
    – Matthew Gauthier
    Dec 13 '18 at 17:38






  • 8




    If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
    – Chloe
    Dec 13 '18 at 22:11








  • 7




    If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
    – MJ713
    Dec 13 '18 at 23:57






  • 2




    Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
    – Mazura
    Dec 14 '18 at 0:58














  • 3




    Sounds very original :-P
    – Rand al'Thor
    Dec 13 '18 at 15:57






  • 1




    fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
    – Matthew Gauthier
    Dec 13 '18 at 17:38






  • 8




    If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
    – Chloe
    Dec 13 '18 at 22:11








  • 7




    If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
    – MJ713
    Dec 13 '18 at 23:57






  • 2




    Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
    – Mazura
    Dec 14 '18 at 0:58








3




3




Sounds very original :-P
– Rand al'Thor
Dec 13 '18 at 15:57




Sounds very original :-P
– Rand al'Thor
Dec 13 '18 at 15:57




1




1




fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
– Matthew Gauthier
Dec 13 '18 at 17:38




fsigenetics.com/article/S1872-4973%2812%2900086-5/abstract --A majority of people have multiple genomes, or genome mosaicism. The New York Times ran a non-technical feature on it in 2013 titles DNA Double Take.
– Matthew Gauthier
Dec 13 '18 at 17:38




8




8




If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
– Chloe
Dec 13 '18 at 22:11






If the detective saw Jekyll kill a prostitute, why didn't he try to stop him or shoot him? I think there might be larger plot holes in your story than just the science.
– Chloe
Dec 13 '18 at 22:11






7




7




If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
– MJ713
Dec 13 '18 at 23:57




If a potion can suddenly make a man a foot taller, why can't it change his DNA as well? Seems like we're applying "hard sci-fi" analysis to a "soft sci-fi" scenario, which feels a bit odd.
– MJ713
Dec 13 '18 at 23:57




2




2




Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
– Mazura
Dec 14 '18 at 0:58




Next question: How could a change in DNA result in an almost immediate and nearly complete change in physique? Dude would be hungry af...
– Mazura
Dec 14 '18 at 0:58










7 Answers
7






active

oldest

votes


















61














Dude is a biological chimera:




A genetic chimerism or chimera (/kɪˈmɪərə/ or /kaɪˈmɪərə/, also chimaera (chimæra) is a single organism composed of cells with distinct genotypes. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs[1] (...) Animal chimeras are produced by the merger of multiple fertilized eggs.




The fact that the first DNA sampling came out as a negative was just luck of the draw. Sherlock got a sample from one of the criminal's genotypes and compared it to the other by chance.




As for the fingerprints: it's usual for a crime scene to have the fingerprints of everyone who had been in there before the place got isolated, and the prostitute may have been visited by multiple clients (or it was a public place). The fact that they couldn't find a fingerprint match is a sign the detective did a sloppy job of comparing just the very first fingerprint they found to Jekyll's. That, or the suspect wore gloves.






share|improve this answer



















  • 11




    Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
    – Elmy
    Dec 13 '18 at 12:05








  • 2




    Came here just to suggest this, saw that I got beaten to the draw. Upvoted
    – QWriter
    Dec 13 '18 at 12:27






  • 1




    Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
    – kikirex
    Dec 13 '18 at 12:41






  • 2




    @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
    – Renan
    Dec 13 '18 at 13:03






  • 8




    @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
    – Elmy
    Dec 13 '18 at 13:47





















12














He received a transplant. Maybe a face transplant! Someone should make a movie about that.



When organs are transplanted, they retain the original DNA of their donors.






share|improve this answer



















  • 1




    Face/Off reference acknowledged
    – rubenvb
    Dec 13 '18 at 16:40






  • 4




    An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
    – Punintended
    Dec 13 '18 at 20:32





















5














This makes me think of Chimerism (mentioned in another answer) and Superfecundation



https://house.fandom.com/wiki/Chimerism




Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases.




https://en.wikipedia.org/wiki/Superfecundation




Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse



Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers.




What's that mean?



You take different sperm from two fathers (mom had a fun night - or a bad night - and might explain the latent anger boiling beneath the surface), fertilize two eggs and then join them together early in the cell duplication stage.



Now you have one man with two sets of DNA.



Additional option



Since we are already talking about long shot odds on top of long shot odds... what if the eggs were implanted by invitro... what if the eggs got mixed and now you literally have two eggs and two sperms from 4 different people? Mix those together...



Result



What does the "potion" he takes do? It temporarily gives the other set of DNA control - physically and mentally.



Why doesn't the potion work on you? Because you aren't a Chimera or Superfecundated.






share|improve this answer































    3














    His DNA is always the same; it is the potion that filled his blood with molecules disturbing forensics exams.




    • To be suitable to DNA exams, a hair must still have its bulb. Let's say they didn't find any.

    • Fingerprints don't really yield DNA.


    That leaves us with blood. Biological protocols are very subject to changes in pH, inhibitors and whatnot. It's sufficient that some molecule from the potion interacts with the standard kits and hinders the reactions necessary to identify its DNA.



    Who knows, being a scientist he could have done it on purpose...






    share|improve this answer





























      1














      You're a Cephalopod in disguise!



      Cephalopods have a unique ability to alter their own RNA! Because RNA regulates gene expression you can change how your traceable genetic material is seen from murder to murder. If your criminal didn't know about this ability its just a happy mistake, if he does and this doctor knows how to interpret this ability then he can actively suppress and release his genes in specific ways.



      This does not change the issue with your finger prints. Thankfully Cephalopods have a solution for you! The way they alter their own coloring is by expanding and contracting small muscles across their body. Put a few of these bad boys in your fingers so you can change or smudge your own finger print while under questioning by the police.






      share|improve this answer



















      • 4




        Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
        – Nuclear Wang
        Dec 13 '18 at 15:06






      • 1




        Is that you, Octodad?
        – Joe Bloggs
        Dec 13 '18 at 17:51



















      0














      Nanobots are rewriting his DNA when he transforms



      It's hard to think of a plausible biological or chemical mechanism that can turn a normal-sized man into a "freakishly large" one and back again in such a short time frame. So how about this: Jekyll's potion either contains or activates a swarm of nanobots, which literally rebuild Jekyll's body before the detective's very eyes.



      The 'bots suck in some matter from the surrounding air, pull some more from "less critical" organs (Hyde has no spleen and severely atrophied kidneys, since he never exists long enough to need them), and do some clever restructuring (Hyde's nano-latticed bones, while both longer and stronger than Jekyll's, actually weigh slightly less), and presto: the guy is a foot taller and has chimpanzee muscles (which are ~50% stronger than human muscles, though they sacrifice some endurance).



      And while they're doing all that, they have to tweak his DNA too. Jekyll's DNA tells Jekyll's cells how to maintain Jekyll's body, not Hyde's; without the DNA changes, the whole biological system would start to fall apart the moment that the 'bots finished active construction.



      Turning Hyde back into Jekyll is just the same process in reverse.



      Where did the nanobots come from in the first place? Well, maybe Jekyll invented them, or maybe he salvaged them from a UFO crash site, or maybe they escaped from the lab upstairs and Jekyll doesn't even know he's using them...I'll leave it as an exercise for the writer.






      share|improve this answer



















      • 2




        FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
        – Punintended
        Dec 13 '18 at 21:02



















      0














      Something like that has actually sort of happened during the investigation of a Soviet serial killer Andrei Chikatilo: he was captured by the police, but released, because his blood type was different than that of the person whose sperm was found on the victims bodies. I said "sort of happened" because the explanation of the phenomenon was simple and somewhat disappointing: negligence and low quality of the tests.






      share|improve this answer





















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        7 Answers
        7






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        7 Answers
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        61














        Dude is a biological chimera:




        A genetic chimerism or chimera (/kɪˈmɪərə/ or /kaɪˈmɪərə/, also chimaera (chimæra) is a single organism composed of cells with distinct genotypes. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs[1] (...) Animal chimeras are produced by the merger of multiple fertilized eggs.




        The fact that the first DNA sampling came out as a negative was just luck of the draw. Sherlock got a sample from one of the criminal's genotypes and compared it to the other by chance.




        As for the fingerprints: it's usual for a crime scene to have the fingerprints of everyone who had been in there before the place got isolated, and the prostitute may have been visited by multiple clients (or it was a public place). The fact that they couldn't find a fingerprint match is a sign the detective did a sloppy job of comparing just the very first fingerprint they found to Jekyll's. That, or the suspect wore gloves.






        share|improve this answer



















        • 11




          Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
          – Elmy
          Dec 13 '18 at 12:05








        • 2




          Came here just to suggest this, saw that I got beaten to the draw. Upvoted
          – QWriter
          Dec 13 '18 at 12:27






        • 1




          Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
          – kikirex
          Dec 13 '18 at 12:41






        • 2




          @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
          – Renan
          Dec 13 '18 at 13:03






        • 8




          @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
          – Elmy
          Dec 13 '18 at 13:47


















        61














        Dude is a biological chimera:




        A genetic chimerism or chimera (/kɪˈmɪərə/ or /kaɪˈmɪərə/, also chimaera (chimæra) is a single organism composed of cells with distinct genotypes. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs[1] (...) Animal chimeras are produced by the merger of multiple fertilized eggs.




        The fact that the first DNA sampling came out as a negative was just luck of the draw. Sherlock got a sample from one of the criminal's genotypes and compared it to the other by chance.




        As for the fingerprints: it's usual for a crime scene to have the fingerprints of everyone who had been in there before the place got isolated, and the prostitute may have been visited by multiple clients (or it was a public place). The fact that they couldn't find a fingerprint match is a sign the detective did a sloppy job of comparing just the very first fingerprint they found to Jekyll's. That, or the suspect wore gloves.






        share|improve this answer



















        • 11




          Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
          – Elmy
          Dec 13 '18 at 12:05








        • 2




          Came here just to suggest this, saw that I got beaten to the draw. Upvoted
          – QWriter
          Dec 13 '18 at 12:27






        • 1




          Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
          – kikirex
          Dec 13 '18 at 12:41






        • 2




          @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
          – Renan
          Dec 13 '18 at 13:03






        • 8




          @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
          – Elmy
          Dec 13 '18 at 13:47
















        61












        61








        61






        Dude is a biological chimera:




        A genetic chimerism or chimera (/kɪˈmɪərə/ or /kaɪˈmɪərə/, also chimaera (chimæra) is a single organism composed of cells with distinct genotypes. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs[1] (...) Animal chimeras are produced by the merger of multiple fertilized eggs.




        The fact that the first DNA sampling came out as a negative was just luck of the draw. Sherlock got a sample from one of the criminal's genotypes and compared it to the other by chance.




        As for the fingerprints: it's usual for a crime scene to have the fingerprints of everyone who had been in there before the place got isolated, and the prostitute may have been visited by multiple clients (or it was a public place). The fact that they couldn't find a fingerprint match is a sign the detective did a sloppy job of comparing just the very first fingerprint they found to Jekyll's. That, or the suspect wore gloves.






        share|improve this answer














        Dude is a biological chimera:




        A genetic chimerism or chimera (/kɪˈmɪərə/ or /kaɪˈmɪərə/, also chimaera (chimæra) is a single organism composed of cells with distinct genotypes. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells of different blood types, subtle variations in form (phenotype) and, if the zygotes were of differing sexes, then even the possession of both female and male sex organs[1] (...) Animal chimeras are produced by the merger of multiple fertilized eggs.




        The fact that the first DNA sampling came out as a negative was just luck of the draw. Sherlock got a sample from one of the criminal's genotypes and compared it to the other by chance.




        As for the fingerprints: it's usual for a crime scene to have the fingerprints of everyone who had been in there before the place got isolated, and the prostitute may have been visited by multiple clients (or it was a public place). The fact that they couldn't find a fingerprint match is a sign the detective did a sloppy job of comparing just the very first fingerprint they found to Jekyll's. That, or the suspect wore gloves.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Dec 14 '18 at 1:01

























        answered Dec 13 '18 at 12:02









        Renan

        43.7k1199223




        43.7k1199223








        • 11




          Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
          – Elmy
          Dec 13 '18 at 12:05








        • 2




          Came here just to suggest this, saw that I got beaten to the draw. Upvoted
          – QWriter
          Dec 13 '18 at 12:27






        • 1




          Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
          – kikirex
          Dec 13 '18 at 12:41






        • 2




          @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
          – Renan
          Dec 13 '18 at 13:03






        • 8




          @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
          – Elmy
          Dec 13 '18 at 13:47
















        • 11




          Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
          – Elmy
          Dec 13 '18 at 12:05








        • 2




          Came here just to suggest this, saw that I got beaten to the draw. Upvoted
          – QWriter
          Dec 13 '18 at 12:27






        • 1




          Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
          – kikirex
          Dec 13 '18 at 12:41






        • 2




          @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
          – Renan
          Dec 13 '18 at 13:03






        • 8




          @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
          – Elmy
          Dec 13 '18 at 13:47










        11




        11




        Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
        – Elmy
        Dec 13 '18 at 12:05






        Damn, you were faster. The phenomenon is also called the Vanishing Twin Syndrome and there has been a case where a mother was accused of abducting her own child because her ovaries had the DNA of her vanished twin sister and the maternity test concluded she was not the biological mother of the child that grew in her own womb.
        – Elmy
        Dec 13 '18 at 12:05






        2




        2




        Came here just to suggest this, saw that I got beaten to the draw. Upvoted
        – QWriter
        Dec 13 '18 at 12:27




        Came here just to suggest this, saw that I got beaten to the draw. Upvoted
        – QWriter
        Dec 13 '18 at 12:27




        1




        1




        Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
        – kikirex
        Dec 13 '18 at 12:41




        Exactly my thoughts. I remember this from one episode of CSI: Bloodlines and there is a lot of other examples in fiction for references.
        – kikirex
        Dec 13 '18 at 12:41




        2




        2




        @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
        – Renan
        Dec 13 '18 at 13:03




        @Jannis he never gained any DNA from any potion. That concotion might as well be just some regular steeet drug. As per the wiki, chimeras are born from the merger of multiple fertilized eggs.
        – Renan
        Dec 13 '18 at 13:03




        8




        8




        @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
        – Elmy
        Dec 13 '18 at 13:47






        @Jannis Jekyll was a mix of 2 different DNAs from birth. Your detective accidently took the first sample from a patch of skin that had a different DNA from the inside of his mouth, where official samples are usually taken. The potion never changed his DNA.
        – Elmy
        Dec 13 '18 at 13:47













        12














        He received a transplant. Maybe a face transplant! Someone should make a movie about that.



        When organs are transplanted, they retain the original DNA of their donors.






        share|improve this answer



















        • 1




          Face/Off reference acknowledged
          – rubenvb
          Dec 13 '18 at 16:40






        • 4




          An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
          – Punintended
          Dec 13 '18 at 20:32


















        12














        He received a transplant. Maybe a face transplant! Someone should make a movie about that.



        When organs are transplanted, they retain the original DNA of their donors.






        share|improve this answer



















        • 1




          Face/Off reference acknowledged
          – rubenvb
          Dec 13 '18 at 16:40






        • 4




          An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
          – Punintended
          Dec 13 '18 at 20:32
















        12












        12








        12






        He received a transplant. Maybe a face transplant! Someone should make a movie about that.



        When organs are transplanted, they retain the original DNA of their donors.






        share|improve this answer














        He received a transplant. Maybe a face transplant! Someone should make a movie about that.



        When organs are transplanted, they retain the original DNA of their donors.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Dec 13 '18 at 16:51

























        answered Dec 13 '18 at 15:00









        Roger

        1,863113




        1,863113








        • 1




          Face/Off reference acknowledged
          – rubenvb
          Dec 13 '18 at 16:40






        • 4




          An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
          – Punintended
          Dec 13 '18 at 20:32
















        • 1




          Face/Off reference acknowledged
          – rubenvb
          Dec 13 '18 at 16:40






        • 4




          An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
          – Punintended
          Dec 13 '18 at 20:32










        1




        1




        Face/Off reference acknowledged
        – rubenvb
        Dec 13 '18 at 16:40




        Face/Off reference acknowledged
        – rubenvb
        Dec 13 '18 at 16:40




        4




        4




        An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
        – Punintended
        Dec 13 '18 at 20:32






        An answer that does: he's an allogeneic bone marrow transplant recipient. His white blood cells will have the donor's genome, the rest of his body will have his own
        – Punintended
        Dec 13 '18 at 20:32













        5














        This makes me think of Chimerism (mentioned in another answer) and Superfecundation



        https://house.fandom.com/wiki/Chimerism




        Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases.




        https://en.wikipedia.org/wiki/Superfecundation




        Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse



        Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers.




        What's that mean?



        You take different sperm from two fathers (mom had a fun night - or a bad night - and might explain the latent anger boiling beneath the surface), fertilize two eggs and then join them together early in the cell duplication stage.



        Now you have one man with two sets of DNA.



        Additional option



        Since we are already talking about long shot odds on top of long shot odds... what if the eggs were implanted by invitro... what if the eggs got mixed and now you literally have two eggs and two sperms from 4 different people? Mix those together...



        Result



        What does the "potion" he takes do? It temporarily gives the other set of DNA control - physically and mentally.



        Why doesn't the potion work on you? Because you aren't a Chimera or Superfecundated.






        share|improve this answer




























          5














          This makes me think of Chimerism (mentioned in another answer) and Superfecundation



          https://house.fandom.com/wiki/Chimerism




          Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases.




          https://en.wikipedia.org/wiki/Superfecundation




          Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse



          Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers.




          What's that mean?



          You take different sperm from two fathers (mom had a fun night - or a bad night - and might explain the latent anger boiling beneath the surface), fertilize two eggs and then join them together early in the cell duplication stage.



          Now you have one man with two sets of DNA.



          Additional option



          Since we are already talking about long shot odds on top of long shot odds... what if the eggs were implanted by invitro... what if the eggs got mixed and now you literally have two eggs and two sperms from 4 different people? Mix those together...



          Result



          What does the "potion" he takes do? It temporarily gives the other set of DNA control - physically and mentally.



          Why doesn't the potion work on you? Because you aren't a Chimera or Superfecundated.






          share|improve this answer


























            5












            5








            5






            This makes me think of Chimerism (mentioned in another answer) and Superfecundation



            https://house.fandom.com/wiki/Chimerism




            Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases.




            https://en.wikipedia.org/wiki/Superfecundation




            Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse



            Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers.




            What's that mean?



            You take different sperm from two fathers (mom had a fun night - or a bad night - and might explain the latent anger boiling beneath the surface), fertilize two eggs and then join them together early in the cell duplication stage.



            Now you have one man with two sets of DNA.



            Additional option



            Since we are already talking about long shot odds on top of long shot odds... what if the eggs were implanted by invitro... what if the eggs got mixed and now you literally have two eggs and two sperms from 4 different people? Mix those together...



            Result



            What does the "potion" he takes do? It temporarily gives the other set of DNA control - physically and mentally.



            Why doesn't the potion work on you? Because you aren't a Chimera or Superfecundated.






            share|improve this answer














            This makes me think of Chimerism (mentioned in another answer) and Superfecundation



            https://house.fandom.com/wiki/Chimerism




            Chimerism is a very rare condition caused by the fusion of zygotes (fertilized eggs) into a single form during early cell duplication. It is extremely rare, with only forty or so known human cases.




            https://en.wikipedia.org/wiki/Superfecundation




            Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse



            Heteropaternal superfecundation refers to the fertilization of two separate ova by two different fathers.




            What's that mean?



            You take different sperm from two fathers (mom had a fun night - or a bad night - and might explain the latent anger boiling beneath the surface), fertilize two eggs and then join them together early in the cell duplication stage.



            Now you have one man with two sets of DNA.



            Additional option



            Since we are already talking about long shot odds on top of long shot odds... what if the eggs were implanted by invitro... what if the eggs got mixed and now you literally have two eggs and two sperms from 4 different people? Mix those together...



            Result



            What does the "potion" he takes do? It temporarily gives the other set of DNA control - physically and mentally.



            Why doesn't the potion work on you? Because you aren't a Chimera or Superfecundated.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Dec 13 '18 at 16:24

























            answered Dec 13 '18 at 16:18









            WernerCD

            97969




            97969























                3














                His DNA is always the same; it is the potion that filled his blood with molecules disturbing forensics exams.




                • To be suitable to DNA exams, a hair must still have its bulb. Let's say they didn't find any.

                • Fingerprints don't really yield DNA.


                That leaves us with blood. Biological protocols are very subject to changes in pH, inhibitors and whatnot. It's sufficient that some molecule from the potion interacts with the standard kits and hinders the reactions necessary to identify its DNA.



                Who knows, being a scientist he could have done it on purpose...






                share|improve this answer


























                  3














                  His DNA is always the same; it is the potion that filled his blood with molecules disturbing forensics exams.




                  • To be suitable to DNA exams, a hair must still have its bulb. Let's say they didn't find any.

                  • Fingerprints don't really yield DNA.


                  That leaves us with blood. Biological protocols are very subject to changes in pH, inhibitors and whatnot. It's sufficient that some molecule from the potion interacts with the standard kits and hinders the reactions necessary to identify its DNA.



                  Who knows, being a scientist he could have done it on purpose...






                  share|improve this answer
























                    3












                    3








                    3






                    His DNA is always the same; it is the potion that filled his blood with molecules disturbing forensics exams.




                    • To be suitable to DNA exams, a hair must still have its bulb. Let's say they didn't find any.

                    • Fingerprints don't really yield DNA.


                    That leaves us with blood. Biological protocols are very subject to changes in pH, inhibitors and whatnot. It's sufficient that some molecule from the potion interacts with the standard kits and hinders the reactions necessary to identify its DNA.



                    Who knows, being a scientist he could have done it on purpose...






                    share|improve this answer












                    His DNA is always the same; it is the potion that filled his blood with molecules disturbing forensics exams.




                    • To be suitable to DNA exams, a hair must still have its bulb. Let's say they didn't find any.

                    • Fingerprints don't really yield DNA.


                    That leaves us with blood. Biological protocols are very subject to changes in pH, inhibitors and whatnot. It's sufficient that some molecule from the potion interacts with the standard kits and hinders the reactions necessary to identify its DNA.



                    Who knows, being a scientist he could have done it on purpose...







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Dec 13 '18 at 18:14









                    LinuxBlanket

                    1714




                    1714























                        1














                        You're a Cephalopod in disguise!



                        Cephalopods have a unique ability to alter their own RNA! Because RNA regulates gene expression you can change how your traceable genetic material is seen from murder to murder. If your criminal didn't know about this ability its just a happy mistake, if he does and this doctor knows how to interpret this ability then he can actively suppress and release his genes in specific ways.



                        This does not change the issue with your finger prints. Thankfully Cephalopods have a solution for you! The way they alter their own coloring is by expanding and contracting small muscles across their body. Put a few of these bad boys in your fingers so you can change or smudge your own finger print while under questioning by the police.






                        share|improve this answer



















                        • 4




                          Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                          – Nuclear Wang
                          Dec 13 '18 at 15:06






                        • 1




                          Is that you, Octodad?
                          – Joe Bloggs
                          Dec 13 '18 at 17:51
















                        1














                        You're a Cephalopod in disguise!



                        Cephalopods have a unique ability to alter their own RNA! Because RNA regulates gene expression you can change how your traceable genetic material is seen from murder to murder. If your criminal didn't know about this ability its just a happy mistake, if he does and this doctor knows how to interpret this ability then he can actively suppress and release his genes in specific ways.



                        This does not change the issue with your finger prints. Thankfully Cephalopods have a solution for you! The way they alter their own coloring is by expanding and contracting small muscles across their body. Put a few of these bad boys in your fingers so you can change or smudge your own finger print while under questioning by the police.






                        share|improve this answer



















                        • 4




                          Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                          – Nuclear Wang
                          Dec 13 '18 at 15:06






                        • 1




                          Is that you, Octodad?
                          – Joe Bloggs
                          Dec 13 '18 at 17:51














                        1












                        1








                        1






                        You're a Cephalopod in disguise!



                        Cephalopods have a unique ability to alter their own RNA! Because RNA regulates gene expression you can change how your traceable genetic material is seen from murder to murder. If your criminal didn't know about this ability its just a happy mistake, if he does and this doctor knows how to interpret this ability then he can actively suppress and release his genes in specific ways.



                        This does not change the issue with your finger prints. Thankfully Cephalopods have a solution for you! The way they alter their own coloring is by expanding and contracting small muscles across their body. Put a few of these bad boys in your fingers so you can change or smudge your own finger print while under questioning by the police.






                        share|improve this answer














                        You're a Cephalopod in disguise!



                        Cephalopods have a unique ability to alter their own RNA! Because RNA regulates gene expression you can change how your traceable genetic material is seen from murder to murder. If your criminal didn't know about this ability its just a happy mistake, if he does and this doctor knows how to interpret this ability then he can actively suppress and release his genes in specific ways.



                        This does not change the issue with your finger prints. Thankfully Cephalopods have a solution for you! The way they alter their own coloring is by expanding and contracting small muscles across their body. Put a few of these bad boys in your fingers so you can change or smudge your own finger print while under questioning by the police.







                        share|improve this answer














                        share|improve this answer



                        share|improve this answer








                        edited Dec 13 '18 at 14:38









                        T.J.L.

                        905919




                        905919










                        answered Dec 13 '18 at 14:33









                        Reed

                        2,148415




                        2,148415








                        • 4




                          Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                          – Nuclear Wang
                          Dec 13 '18 at 15:06






                        • 1




                          Is that you, Octodad?
                          – Joe Bloggs
                          Dec 13 '18 at 17:51














                        • 4




                          Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                          – Nuclear Wang
                          Dec 13 '18 at 15:06






                        • 1




                          Is that you, Octodad?
                          – Joe Bloggs
                          Dec 13 '18 at 17:51








                        4




                        4




                        Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                        – Nuclear Wang
                        Dec 13 '18 at 15:06




                        Forensic biology is done with DNA, not RNA. Most organisms have an RNA gene expression profile that changes over time, which is why it can't be used to ID a particular individual at different time points.
                        – Nuclear Wang
                        Dec 13 '18 at 15:06




                        1




                        1




                        Is that you, Octodad?
                        – Joe Bloggs
                        Dec 13 '18 at 17:51




                        Is that you, Octodad?
                        – Joe Bloggs
                        Dec 13 '18 at 17:51











                        0














                        Nanobots are rewriting his DNA when he transforms



                        It's hard to think of a plausible biological or chemical mechanism that can turn a normal-sized man into a "freakishly large" one and back again in such a short time frame. So how about this: Jekyll's potion either contains or activates a swarm of nanobots, which literally rebuild Jekyll's body before the detective's very eyes.



                        The 'bots suck in some matter from the surrounding air, pull some more from "less critical" organs (Hyde has no spleen and severely atrophied kidneys, since he never exists long enough to need them), and do some clever restructuring (Hyde's nano-latticed bones, while both longer and stronger than Jekyll's, actually weigh slightly less), and presto: the guy is a foot taller and has chimpanzee muscles (which are ~50% stronger than human muscles, though they sacrifice some endurance).



                        And while they're doing all that, they have to tweak his DNA too. Jekyll's DNA tells Jekyll's cells how to maintain Jekyll's body, not Hyde's; without the DNA changes, the whole biological system would start to fall apart the moment that the 'bots finished active construction.



                        Turning Hyde back into Jekyll is just the same process in reverse.



                        Where did the nanobots come from in the first place? Well, maybe Jekyll invented them, or maybe he salvaged them from a UFO crash site, or maybe they escaped from the lab upstairs and Jekyll doesn't even know he's using them...I'll leave it as an exercise for the writer.






                        share|improve this answer



















                        • 2




                          FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                          – Punintended
                          Dec 13 '18 at 21:02
















                        0














                        Nanobots are rewriting his DNA when he transforms



                        It's hard to think of a plausible biological or chemical mechanism that can turn a normal-sized man into a "freakishly large" one and back again in such a short time frame. So how about this: Jekyll's potion either contains or activates a swarm of nanobots, which literally rebuild Jekyll's body before the detective's very eyes.



                        The 'bots suck in some matter from the surrounding air, pull some more from "less critical" organs (Hyde has no spleen and severely atrophied kidneys, since he never exists long enough to need them), and do some clever restructuring (Hyde's nano-latticed bones, while both longer and stronger than Jekyll's, actually weigh slightly less), and presto: the guy is a foot taller and has chimpanzee muscles (which are ~50% stronger than human muscles, though they sacrifice some endurance).



                        And while they're doing all that, they have to tweak his DNA too. Jekyll's DNA tells Jekyll's cells how to maintain Jekyll's body, not Hyde's; without the DNA changes, the whole biological system would start to fall apart the moment that the 'bots finished active construction.



                        Turning Hyde back into Jekyll is just the same process in reverse.



                        Where did the nanobots come from in the first place? Well, maybe Jekyll invented them, or maybe he salvaged them from a UFO crash site, or maybe they escaped from the lab upstairs and Jekyll doesn't even know he's using them...I'll leave it as an exercise for the writer.






                        share|improve this answer



















                        • 2




                          FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                          – Punintended
                          Dec 13 '18 at 21:02














                        0












                        0








                        0






                        Nanobots are rewriting his DNA when he transforms



                        It's hard to think of a plausible biological or chemical mechanism that can turn a normal-sized man into a "freakishly large" one and back again in such a short time frame. So how about this: Jekyll's potion either contains or activates a swarm of nanobots, which literally rebuild Jekyll's body before the detective's very eyes.



                        The 'bots suck in some matter from the surrounding air, pull some more from "less critical" organs (Hyde has no spleen and severely atrophied kidneys, since he never exists long enough to need them), and do some clever restructuring (Hyde's nano-latticed bones, while both longer and stronger than Jekyll's, actually weigh slightly less), and presto: the guy is a foot taller and has chimpanzee muscles (which are ~50% stronger than human muscles, though they sacrifice some endurance).



                        And while they're doing all that, they have to tweak his DNA too. Jekyll's DNA tells Jekyll's cells how to maintain Jekyll's body, not Hyde's; without the DNA changes, the whole biological system would start to fall apart the moment that the 'bots finished active construction.



                        Turning Hyde back into Jekyll is just the same process in reverse.



                        Where did the nanobots come from in the first place? Well, maybe Jekyll invented them, or maybe he salvaged them from a UFO crash site, or maybe they escaped from the lab upstairs and Jekyll doesn't even know he's using them...I'll leave it as an exercise for the writer.






                        share|improve this answer














                        Nanobots are rewriting his DNA when he transforms



                        It's hard to think of a plausible biological or chemical mechanism that can turn a normal-sized man into a "freakishly large" one and back again in such a short time frame. So how about this: Jekyll's potion either contains or activates a swarm of nanobots, which literally rebuild Jekyll's body before the detective's very eyes.



                        The 'bots suck in some matter from the surrounding air, pull some more from "less critical" organs (Hyde has no spleen and severely atrophied kidneys, since he never exists long enough to need them), and do some clever restructuring (Hyde's nano-latticed bones, while both longer and stronger than Jekyll's, actually weigh slightly less), and presto: the guy is a foot taller and has chimpanzee muscles (which are ~50% stronger than human muscles, though they sacrifice some endurance).



                        And while they're doing all that, they have to tweak his DNA too. Jekyll's DNA tells Jekyll's cells how to maintain Jekyll's body, not Hyde's; without the DNA changes, the whole biological system would start to fall apart the moment that the 'bots finished active construction.



                        Turning Hyde back into Jekyll is just the same process in reverse.



                        Where did the nanobots come from in the first place? Well, maybe Jekyll invented them, or maybe he salvaged them from a UFO crash site, or maybe they escaped from the lab upstairs and Jekyll doesn't even know he's using them...I'll leave it as an exercise for the writer.







                        share|improve this answer














                        share|improve this answer



                        share|improve this answer








                        edited Dec 13 '18 at 21:17

























                        answered Dec 13 '18 at 17:13









                        MJ713

                        1316




                        1316








                        • 2




                          FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                          – Punintended
                          Dec 13 '18 at 21:02














                        • 2




                          FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                          – Punintended
                          Dec 13 '18 at 21:02








                        2




                        2




                        FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                        – Punintended
                        Dec 13 '18 at 21:02




                        FWIW, chimp strength also has to do with the joint structure and positioning. They sacrifice range of motion (e.g. chimps can't get the circular shoulder motion that human's can) for some power
                        – Punintended
                        Dec 13 '18 at 21:02











                        0














                        Something like that has actually sort of happened during the investigation of a Soviet serial killer Andrei Chikatilo: he was captured by the police, but released, because his blood type was different than that of the person whose sperm was found on the victims bodies. I said "sort of happened" because the explanation of the phenomenon was simple and somewhat disappointing: negligence and low quality of the tests.






                        share|improve this answer


























                          0














                          Something like that has actually sort of happened during the investigation of a Soviet serial killer Andrei Chikatilo: he was captured by the police, but released, because his blood type was different than that of the person whose sperm was found on the victims bodies. I said "sort of happened" because the explanation of the phenomenon was simple and somewhat disappointing: negligence and low quality of the tests.






                          share|improve this answer
























                            0












                            0








                            0






                            Something like that has actually sort of happened during the investigation of a Soviet serial killer Andrei Chikatilo: he was captured by the police, but released, because his blood type was different than that of the person whose sperm was found on the victims bodies. I said "sort of happened" because the explanation of the phenomenon was simple and somewhat disappointing: negligence and low quality of the tests.






                            share|improve this answer












                            Something like that has actually sort of happened during the investigation of a Soviet serial killer Andrei Chikatilo: he was captured by the police, but released, because his blood type was different than that of the person whose sperm was found on the victims bodies. I said "sort of happened" because the explanation of the phenomenon was simple and somewhat disappointing: negligence and low quality of the tests.







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Dec 14 '18 at 6:34









                            Headcrab

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