Genetic make-up plays role in friendship too?
Vices attract while virtues repel people, according to a new study, which has found that genetic make-up plays a part in who one chooses as friends.
Researchers have found that people partly choose their friends by their genes especially those that have a big impact on their behaviour — sometimes it can be a case of “opposites attract” while sometimes “birds of a feather flock together”.
To research the conclusion, a team, led by Dr James Fowler at University of California, used data from two large health studies to search for genetic links. The researchers identified genetic markers, or genotypes, in six specific genes and looked at how often they occurred among friends. They found two clear examples where “birds of a feather flock together” and “opposites attract”.
The first involved a variant of the gene DRD2 which has been associated with alcoholism. People who carried the DRD2 genotype tended to befriend others with the same marker. Those who lacked the marker were also more likely to be friends with one another. “It is not hard to imagine that non-drinkers may actively avoid alcoholics, or that alcoholics may be drawn to environments that non-drinkers avoid,” the Daily Telegraph quoted the researchers.
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