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Humans Choose Friends With Similar DNA

KentuckyFC writes "The study of social networks has long shown that people tend to pick friends who are similar to them — birds of a feather stick together (PDF). Now a study of the genomes of almost 2000 Americans has found that those who are friends also share remarkable genetic similarities. 'Pairs of friends are, on average, as genetically similar to one another as fourth cousins,' the study concludes. By contrast, strangers share few genetic similarities. The result seems to confirm a 30-year-old theory that a person's genes causes them to seek out circumstances that are compatible with their phenotype. If that's the case, then people with similar genes should end up in similar environments and so be more likely to become friends."

4 of 204 comments (clear)

  1. Could it be something more basic? by lagomorpha2 · · Score: 5, Interesting

    In a number of different memoirs from actors in the original Planet of the Apes, it was noted that people playing different types of apes always sat with each other at lunch. It was a bizarre granfalloon - baboons with baboons and orangs with orangs for no other reason than that they looked the same. And these were people that knew each other before the film.

    People have a natural inclination to like people that look more like them whether it makes sense in modern society or not.

  2. Re:2000 Wyoming (or Montana, or Nebraska) citizens by Bill,+Shooter+of+Bul · · Score: 4, Interesting

    I find your comment to be the same. Assuming that people in the city are more sophisticated than "rednecks who listen to country music and drink cheap beer and whisky"? How is that not an elitist comment? Cultural bubbles can also exist within large urban areas. This is how you end up with a Little Italy, China Town, etc sections in each large city. There are others not so visually apparent, I'm just picking on commonly known ones who's existence I wouldn't have to argue about.

    --
    Well.. maybe. Or Maybe not. But Definitely not sort of.
  3. Choice of circumstance? by fahrbot-bot · · Score: 4, Interesting

    I'm reminded of the Better Off Ted episode Get Happy

    Linda suggests that Veridian let its employees have decorations in their company. Veronica agrees, but the company selects the decorations and assigns them to the employees. Linda discovers that she's suddenly a cat person, while other employees have cars, Green Bay Packers, or space decorations.

    ... Linda bonds with her fellow cat employees who start obsessing about cats... At lunch, Linda decides to talk with the outer space employees. They think they're too smart for her, and the cat employees see her as a traitor... Later, Linda discovers that the cat people have destroyed her cat decorations.

    "Veridian Dynamics. Teamwork. It keeps our employees gruntled."

    --
    It must have been something you assimilated. . . .
  4. Re:How dare you!? by Stormy+Dragon · · Score: 5, Interesting

    Groucho wasn't being self deprecating, he was mocking the anti-semitism of the time and how once he became famous, all these organizations that normally would never have considered letting someone Jewish join suddenly wanted him to become a member.