This situation called “fourfold marriage” is not as rare as it seems; According to the records, it has happened about 250 times. There are also some examples in Turkey. Generally “Twin Festival” They meet at events called

You can’t help but think, “I wonder if they’re going to have a mess of legs and hands,” “Kids will get confused.” We’ll leave this mess to them. “Will the kids be brothers or cousins?” Let’s answer the question:

Babies born from these pairs are considered “genetic” siblings.

Because identical twins from the same egg and sperm they share the same genetic material as they are designed (fraternal twins are designed from a different egg and sperm). Therefore, if we were to collect and observe two married couples and their children, it would be difficult to determine which children belonged to which parents.

Their DNA may differ slightly due to environmental factors.

For example, if one of the mothers smokes or eats unhealthy compared to her twin sister, that mother’s child will become Some differences in DNA and will therefore be slightly different from the other child.

Although they are genetically siblings, they cannot legally be siblings. They are legal cousins, but for such children “double cousin (twin cousin)” is called.

Sources: Live Science, futurism, popular science