In a series of histograms (graphs showing the distribution of genome and population data), Hawks shows that Asian and European genomes have significantly more Neanderthal DNA than African genomes. The averages for Asian and European samples are around 3% higher than the average for African samples. Whatever gave Africans some degree of similarity to Neanderthals, non-Africans seem to have received around 3% more of it. Europeans average a bit more Neanderthal DNA than Asians, showing that Europeans probably mixed with Neanderthals as they moved into Europe, adding a secondary mix of Neanderthal DNA into their genome beyond the primary mix...
