In the "Who Shot Mr Burns" episode of The Simpsons when they find Simpson DNA at the crime scene Marge insists this doesn't rule her out as a suspect because "When I married your father I took his name, his DNA, everything" I've always wondered about a world where that's truehttps://twitter.com/_hoetato/status/1221493724938526721 …
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Oh, it actually is! Fetal cells get into the parent's blood and create microchimeras. XX parents who've had XY children can have bits of Y DNA in some body parts for the rest of their life.https://www.smithsonianmag.com/science-nature/babys-cells-can-manipulate-moms-body-decades-180956493/ …
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It probably won't show up on a swab DNA test, though.
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It's not pregnancy. It's saying "I do" at your wedding. Weddings are just complex rituals to cast a spell that changes the genes of the woman. And ownership, I guess.
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If that were true then I'd think it should be functionally impossible to trace genetic maternal lineage across generations (at least not w/out paternal genetics to contrast against), and I've never seen any data that suggests that's the case.
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I think that would really depend on where the DNA sample comes from.
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I mean, if it wasn't something that periodically came up in DNA tests, we wouldn't be aware of the phenomenon at all.
End of conversation
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