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: ...

PHILADELPHIA — In an unprecedented feat of forensic anthropology, European researchers extracted enough DNA from two Neanderthal skulls to suggest their owners sported red hair and white skin back ...

When ancient humans mated, dad was a Neanderthal, mom was Homo sapiens.

Not every modern human has the same set of Neanderthal DNA, however; different people will, by chance, have inherited different fragments. But there are also some areas, termed “Neanderthal deserts,” ...