Genetically, Close Friends Like Distant Cousins
Study claims close friends share 1% of their genetic makeup
By Newsy, a Newser Video Partner
Posted Jul 15, 2014 6:15 PM CDT

(Newser) – A new study from authors at Yale and the University of California San Diego says we share a bit of DNA with our close friends. The study claims close friends share 1% of their genetic makeup. That's about the same similarity as fourth cousins—or those who have the same great, great, great grandparents. The study, published in Proceedings of the National Academy of Sciences, looked at 1,932 people and compared 1.5 million genetic markers.