Genes May Determine Your Friendships

01/18/2011 03:53 pm ET | Updated Nov 17, 2011

A new study suggests that when it comes to certain genes, friends of a feather flock together--but with others, opposites attract. The research offers potential insight into subtle genetic influences that may affect how people become friends--which can have an enormous impact on later life choices. One gene that may link friends, for example, is also connected to the risk of alcoholism.

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