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
No, because sibling is defined based on who your parents were, not based on your genetics
However, they would share essentially the same level of genetic relatedness as siblings, provided the twin parents were identical twins.
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