Add Yahoo as a preferred source to see more of our stories on Google. A Penn team says missing Neanderthal DNA on the human X chromosome may reflect ancient mate choice, not toxic genes. (CREDIT: ...
Two different human species meet tens of thousands of years ago. Modern humans, fresh from Africa, encounter their stockier, cold-adapted cousins in what is now Europe. Did this initial meeting lead ...
When ancient humans mated, dad was a Neanderthal, mom was Homo sapiens.