If you had two separate sets of twins, say one set is male and the other female, and they coupled up and eventually had kids, would their kids be siblings or cousins on a DNA level?
This is just wildly hypothetical, but I saw a clickbait ad somewhere about a story, and now I’m curious if there’s any validity to it. It said the kids would all have matching DNA and were siblings
In: 16
This happened; I read about it a few months ago. Identical twin brothers married identical twin sisters. Both had a baby boy. The kids are cousins but genetically they’re brothers because of their parents’ genetics.
The two families live together as well. I think it was Pennsylvania somewhere.
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