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Friends tend to be genetically similar

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Friends tend to be genetically similar

We don’t become friends with just anyone. After studying more than 1360 pairs of friends, researchers have found that people tend to buddy up with those who are genetically similar to them, The Washington Post reports. Though they’re not sure how it happens, the research—published online this week in the Proceedings of the National Academy of Sciences—suggests that many friends are as similar as fourth cousins, or as if they shared the same great-great-great-grandparents.

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