“this baby came out of you but im not 100% sure its yours”
Funny thing – a woman who applied for welfare after her husband left her hadto supply DNA evidence he was actually the father. The results: he was definitely the father, but she wasn’t the mother. Her children were removed from her custody and she was sued for fraud, even though she insisted they were her children.
Turns out, she wasn’t a surrogate or a kidnapper (the two most obvious explanations) – she was a chimera. As an embryo, she fused at a very early stage with her twin, forming one individual. Her ovaries apparently developed from cells that had originally belonged to her vanished twin. Later on more tests showed that while the woman’s skin and hair DNA did not match her childrens, DNA taken from her cervix did.
WHAT THE FUCk
This went from stupid to really interesting in point 5 seconds.
There’s multiple cases of this very thing
Idk weird stuff man
Science doing random shit to fuck with your head
We don’t actually know how many human chimeras there are because most of the time you can’t tell.
However, some cases of intersex and even some trans individuals may be chimeras that result from the fusion of two embryos that have different genetic sex. This may also explain why some female athletes fail a sex test. (Other possibilities include genetic transcription that resulted in the loss of the SRY gene from the Y chromosome. The SRY gene is the actual switch that results in the development of a male phenotype).
Chimerism is also seen in animals.
This is Dunbar’s Gold. As you can see he looks like a brindle dog.
At one point he was bred to a mare called Sharp One, who also had the same brindle pattern, in the hope that they could breed more brindle horses – which are vanishingly rare.
Both horses are Quarter Horses, and the breeder sent in a gene sample from the foal for typing to allow him to be registered.
The test showed that the foal was related to neither his sire nor his dam.
They even did the test twice. Most cases of failed genetic testing are a sample mixup (either the hair or the semen used to produce the foal).
It turned out Dunbar’s Gold had had to be tested three times to get a good sample – and the third time was a blood test not the hair follicle test normally done. On top of that, when they looked at his gene type again they realized something rather important to a stallion was missing – he had no Y chromosome.
It was eventually established that both horses were chimeras and that in Dunbars Gold two different gene types existed in his skin and coat (one male, one female, just to prove that happens). Each gene line had a different set of color genes, but both matched properly to his parents. His foals, of course, all matched to the male gene line.
When they tested Sharp One’s other foal they discovered she was producing eggs from both of her gene lines. (Something which could also happen with a human chimera).
Science. Is. Fun.
SCIENCE.
Even more reasons why the transphobic/homophobic 2 gender arguments “it’s just not natural” is bullshit, because man, biology is too fucking weird to only deal in black and whites.
Also, interestingly enough, after a woman bears a child her DNA can be irrevocably changed in certain areas. Cells from the fetus pass through into her own bloodstream and integrate with her body. It’s why some females can register as male on blood tests at first. because they literally have the dna inside of them. Here’s an article about it from the Smithsonian.
