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: ...

The human genome is a rich, complex record of migration, encounters, and inheritance written over thousands of millennia. Genomic research by members of Sarah Tishkoff's lab at the University of ...

Scientists have discovered that the prehistoric romance between Neanderthals and modern humans was a heavily lopsided affair, with pairings occurring almost exclusively between Neanderthal men and ...

Thin stretches of the human X chromosome look oddly empty when you scan for Neanderthal DNA. Geneticists even have a name for the gaps: “Neanderthal deserts.” They sit there like blank tape in an ...