New research reveals that ancient interbreeding between humans and Neanderthals shaped our modern human DNA - especially on the X chromosome.

Most people of non-African ancestry carry about 2% Neanderthal DNA, and researchers report a mirror image pattern with more human DNA on the Neanderthal X chromosome.

Females carry two X chromosomes, and males carry one. Therefore, if Neanderthal males and modern human females were mating ...

Most people with non-African ancestry carry roughly 1–4% Neanderthal ancestry spread across their genomes, a legacy of contact after modern humans expanded into Eurasia. But the X chromosome, one of ...

NEW YORK -- Humans and Neanderthals cozied up from time to time when they lived in the same areas tens of thousands of years ago. But we don't know much about who got with whom, or why. A new genetic ...

Dating out of your league? New research says it's a tale as old as time. A study out Thursday in Science argues that Neanderthal men and human women were particularly inclined to mate, a sexual habit ...

Humans and Neanderthals cozied up from time to time when they lived in the same areas tens of thousands of years ago. But we ...