this video contains subject matter that may be offensive and disturbing to some people if you are the type to require a warning throughout a video or show let this message serve as your warning this channel discusses the harsh reality of true crime if this warning is not sufficient for you consider a different genre and unsubscribe from my channel immediately explain to us what a chimera is because i guess they exist. Oh i love those those are people with two DNAs in their bodies good good to be a criminal if yeah if you're a chimera right in fact i was gonna say my favorite one is this uh serial killer in uh russia his name was andre chicatillo and he was camara and he got away with murder for 10 years because the dna at the scene of the crime the semen left wasn't anything like the dna that they took from him the blood at the police station and um so they said it can't be him they kept saying it's got to be him no it can't be him the dna didn't match but it has to be him so for some reason uh i forgot what happened they maybe took saliva the next time or something match and it turned out he had two dnas in his body wow did he did he know that he just oh my god he was like you got me holy what do you mean that's not mine that's what he was saying right what do you mean that's not my semen he was thinking yeah you know and then he didn't catch me so dad he must have just been absolutely well you know in those days this was in the 80s probably the 90s nobody he didn't know a lot about dna he didn't know i mean this was the police learning about dna and knowing that if it didn't match it wasn't him but it was but nowadays that same guy was now and he he was exonerated they said well we tested the dna in the semen and we tested you and they're completely two different people yeah well you know it depends because it could come out looking like a mixture and they and they tried that once they tried to trick the dna analyst by sending in a camaro in you know and seeing if the dna analyst would say look it's a mixture i can't deal with it you know and um there was an article in the new york times there was a guy that gave a lecture at a talk at one of the big dna conferences called issue and he had just had a bone marrow transplant and they were tracking uh you know what dna was in his body you know whether it was the new dna from the bone marrow transplant or the old one and i if i remember right his saliva his dna kept coming and going it would come it would come back and then it disappeared so what is how does it happen well they think that it's because somebody's conceived as a twin and the twins merge into one person one one twin absorbed is absorbed oh like so fraternal twins that absorb so almost the exact opposite of identical twins it's one and then they split off except those are two identical yeah well they they think it happens with identical twins but you'll never know oh god that's right so the you know some people you know occasionally somebody's going with this lump or something and they find out it's key it's the twin that would have been born stuff like that but it's the merger of these it must be like right away almost like they're just i would say you know i would say that's not a big window for that but it must happen you know there was a woman recently this is cool she was um she had welfare for her children and they they didn't believe her so she took a dna test and her children didn't match her so she was going to be you know accused of welfare fraud she kept saying look they're all my children this is my husband right so she turned out she was pregnant and when she went to the hospital they had the police with her in the delivery room and everything she would deliver the child they were white right there they witnessed it and the dna in the baby did not match her oh man and they were going yeah that's what they said oh man you know and it she was a chimera and she um she had two dnas in her body and she was passing the other dna i've heard oh wait can i tell you my favorite story yeah oh this is keep on going everyone's gonna love the chimeras no no this this is my favorite story the this couple went to a fertility clinic to conceive a child so they can see this beautiful child looked great nothing wrong had the baby tested everything's fine except there's one thing very strange about the baby and that is at the first test they did the baby did not share any dna with the father the couple went back to the fertility clinic with their attorney and tried to explain how upset they were well they did another test and they found out that the baby shared 25 of its dna with the dad the second test and the only way they could figure out this work was that the dad was a chimera and that he was conceived as a twin and that he absorbed his maternal twin and that the sperm that went into fertilizing that egg to make that baby was his brother's dna so that he was really the uncle of the baby that he had conceived with his wife through the fertility see i actually understood that that's that's that's the scary that's the scary part i mean just that the whole concept of chimera is absolutely crazy they they don't feel any differently than anybody else right not i know of i mean it's not like they get headaches on thursdays you know well it's i wonder you know does it ever happen has there ever been a chimera that turns out to be a conjoined twin wouldn't that be weird if they're so rare that the odds are probably so low right like yeah because conjoined twins i mean they're super rare right so and then but just imagine if you because you could literally have two completely different looking people on a conjoined um what would have been a chimera but they i don't know how to say let's say they merged a little bit later and then they sort of developed um i don't know i don't know if that would ever yeah well you know what it'd be a little bit tough because yeah that usually those conjoined twins are uh what identical twins right yeah and they just so that you know you're dealing with chimeras you can't really detect that you know the identical twin part of the chimera right chimerism because there's a identical twin and they merge you're never gonna see it it's got to be fraternal when they merge and then you start telling and i don't know if that really happens with conjoined twins if two twins are floating around in there and they're saying hey hey let's get yeah and they get stuck and i think that there would be rejection issues somehow yeah right i think the conjoined twins start like this and they start separating and they never let go whereas this is like two that are separate and they kind of net on top so i think it's the opposite direction i'd like to just physically see i mean i you know it would be cool if somebody intentionally started off making a chimera but then you know just to see what the hell happened does it i mean nobody knows how to do it artificially right no i mean and why would you want to mess with it why well well just like with mice you know well you do actually you do um do create chimeras when you give bone marrow transplants now i've heard somebody say that somehow you then your dna can be that's another crime story then right yeah it is it is and that was like i said they the guy with the bone marrow transplant you know they did a study on him they took his dna from his lips his mouth his semen his hair you know his blood and they monitored how much of him kept coming back i mean you can't get rid of all your dna right so you know over time sometimes more of his dna would be there i think the dna in his hair never changed so why does it happen why does it happen during a bone marrow transplant and not maybe a blood transfusion because i think the blood kind of gets flushed out and you know redoes itself whereas the bone marrow is the source of your dna in your body you know it's it's like the little the uh factory to my understanding so you know you really uh you probably never get rid of entirely all your dna it's still in there so you just replace it with somebody else's bone marrow which carries there carries their dna so kind of just seems like there's so many weird sort of ramifications so when you get bone marrow transplants i mean does some of the you know since you're changing your dna does it sort of can it alter your look in some way oh that's interesting i i really don't know i i think that okay this is the edge of what i understand you know that you're replacing stem cells and stuff so that's a good question how come your hair doesn't turn blonde or something you must have you know a certain amount of dna of your own otherwise kind of in your body and it's never entirely replaced i i don't know i'd say your blood type would change maybe there's some things that you know once it's set it's set right and then yeah even putting dna in your body isn't gonna change i think you know i think what it probably is is that part of your body that renews itself quickly like your blood your bone marrow your saliva you know that kind of thing that probably is more volatile you know you you change that out whereas like my skin cells that divide and stuff they're still me you know there there's so many of them that you're never going to change all of that that's because in the future we're going to probably develop technology where you can be almost like an amphibian where you lose an arm and it grows back now what if you just had a bone marrow transplant in that instance that arm might come back a little bit with like the other person right yeah and i'm just saying you know another sci-fi story you have a lot of listeners hey listeners here's your your idea for your new york times bestseller by the way but you gotta admit that is pretty crazy right some of that stuff you know i i tell you that probably all kinds of like the guy in the fertility clinic being his own uncle my uncle of his baby you're gonna see a lot of weird stuff like that i don't think yeah like if you were sitting in a bar and telling that story nobody would believe it yeah i mean normally you have dna and something goes wrong and the child dies or there's a mutation you get a disease or you have diabetes so you have some kind of other deal going on you have uh down syndrome or something you know if the organism dies or is very effective these ones with the chimera that's just benign it just happens and you survive and you don't even know it yeah it seems so weird to me that you could merge um two completely different dna beginnings i guess however you want to sit and then you but you don't notice it at all it just seems hard to me you know it is another one i know about uh a pair of twins up in british columbia and they were identical twins right they they tested uh i think they tested yeah they what was it they tested the dna in their skin or something and um they they were identical no problem and one of them that when they were about seven or eight years old one of them developed cystic fibrosis and it's a genetic disease and the other one didn't so what was going on right they didn't know so um okay so i was already thinking this ahead of you when you were one of the one of the twins the way you test with cystic fibrosis is you take like the salt from your skin you uh you know you see it's got like a lot of copper fluoride in your skin that's the diagnosis and when they did that they snagged some skin cells oh i know what it was they had done blood tests and they were identical twins so when they scraped the skin they got some skin cells from the sick child and the well child they compared the dna from the skin and they found out they were not identical so what they figured out was when the children were conceived they were next to one another in the womb and the sick child commanded commandeer the blood supply of the healthy child and so when they were born one child was fine she was exactly what you thought but the other child was a chimera because she was actually a fraternal twin that had taken over the blood supply her own buzz but from her healthy sister so she had two that's that's what was that's what i knew i knew you were going there but the weird part is is the uh the cut that that means that there was going to be had that not occurred there would have been triplets but two would have been identical and there would have been one just fraternal twin right no there'd be two kids one there'd just be fraternal twins yeah but yeah but there's a there but the third the chimera one had that not been squished because you said that um let's see no there's only two no okay okay they're two they're two and they're fraternal no problem okay this one's sick this one's well oh i see what you're saying they were for one kind of they were snuggled up against each other and this one says hey give me some blood i get what you're saying they thought they were identical because some tests would show that yeah the blood was the same yeah the blood test showed them okay they're identical twins okay well how about that oh wait a minute that scenario that i just said will happen at some point where you'll have two identical twins yeah and then that yeah it'll be the same scenario where if you had had a for two fraternal twins however sometimes one of those fraternal twins will separate but what if at that time one of the if it was quick enough that one of the identical uh merged with the fraternal twin then you'd have literally yeah he's got it which is kind of similar so they're like half identical half maternal depending on what you look at yeah for just a brief moment they were identical and then boom the one but it would end up being similar actually to what you just said yeah so you know you never i mean we're gonna come across all these weird dna stories sooner or later you