Missing Y chromosome kept us apart from Neanderthals | New ScientistThere is no serious doubt outside creationist circles these days that a) modern humans and Neanderthals were different species of human who lived contemporaneously in Eurasia, and b) they interbred very occasionally but not often and not very successfully.
Neanderthal DNA has been identified in non-African modern humans, mostly on the X chromosome. It has been associated with pale skin and other cold-climate adaptations but also with arthritis, auto-immune conditions, depression and even addiction.
But there was one little problem. Had we got our Neanderthal genes from male Neanderthals we should expect to see some


















