Study: People Choose Friends With DNA Similar To Theirs

Life & Love | Gerren Keith Gaynor | 07/16/2014 | 09:00 AM EDT

Researchers discover similar genes among friends

New research indicates that you may share more than a friendship with people in your circle...you may actually share their DNA.


STUDY: WOMEN IN RED GIVE OFF THREATENING SIGNALS TO OTHER WOMEN


The findings claim that people often choose friends that are similar to them in genetics. So much so that sets of friends could pass genetically for their fourth cousins. In other words: people with the same great-great-great grandparents.


Scientists looked at 1,932 people, comparing unrelated friends to unrelated strangers. They found that friends shared about 1 percent of their genes, which is a percentage much higher than those shared with strangers.


Nicholas Christakis, a professor of sociology, evolutionary biology and medicine at Yale, told Reuters that scientists aren't totally sure why the findings are as such, but that "it could involve the workings of a postulated 'kin detection system' in humans.”


"Our fates depend not only on our own genes, but also on the genes of others around us, and in particular our friends,” he said.


The genes that lined up the most were olfactory genes, which deal with smell, while the genes that lined up the least were immune system genes. Researchers say they aren’t sure why that happened, but said that it made sense for friends to enjoy similar smells.


STUDY: EATING APPLES MAY INCREASE SEXUAL PLEASURE IN WOMEN


The study
was published in the journal Proceedings of the National Academy of Sciences. In May, similar research found that people often choose their spouses with DNA similar to theirs.


(Photo: DreamPictures/Blend Images/Corbis)

Study Says Tipping Is Actually Based On Race and Sex Appeal

related stories

Tipping of Attraction

The whiter and attractive you are, the bigger the payoff

Keep Friends Out!

Your relationship is for you and your man, not your girls

Centric News

Long Island Student Accepted To All 8 Ivy Leagues

Health & Fitness

The More Friends You Go With, The More You Drink

comments