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The tendency of people to forge friendships with people of a similar appearance has been noted since the time of Plato. But now there is research suggesting that, to a striking degree, we tend to pick friends who are genetically similar to us in ways that go beyond superficial features.
For example, you and your friends are likely to share certain genes associated with the sense of smell.
Our friends are as similar to us genetically as you’d expect fourth cousins to be, according to the study published Monday in the Proceedings of the National Academy of Sciences. This means that the number of genetic markers shared by two friends is akin to what would be expected if they had the same great-great-great-grandparents. […]
The resemblance is slight, just about 1 percent of the genetic markers, but that has huge implications for evolutionary theory.
polyvinyl chloride, colored with oil, mixed technique and accessories { Duane Hanson, Children Playing Game, 1979 }
