Add Yahoo as a preferred source to see more of our stories on Google. Scientists, however, have found it surprisingly hard to piece together gene flow in the opposite direction: how intermingling ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A group of people hiking in the mountains. There was a moment in human history when our entire existence may have desperately ...