People pick friends who are genetically similar to themselves: study
Published on Jul 15, 2014 7:16 AM
WASHINGTON (REUTERS) - The truism that friends are the family you choose may be more accurate than you might suppose.
A study published on Monday found that people are apt to pick friends who are genetically similar to themselves - so much so that friends tend to be as alike at the genetic level as a person's fourth cousin.
The findings were based on an examination of about 1.5 million markers of genetic variations in a group of nearly 2,000 people who had taken part in a long-running health study based in Massachusetts.
The researchers compared people identified as friends to those who were not.
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