DNA study finds many genetic mutations are rare and recent
Monday, December 10, 2012 - 01:30
in Biology & Nature
Scientists look at a broad sample of human DNA and get a snapshot of how dramatically we've changed in the last few thousand years.Human DNA contains myriad individual differences that influence a host of traits, be they eye color or the ability to digest milk. Now a study shows that most of those tiny genetic variations are rare — and they arose in the very recent history of our species.