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

Scientists say DNA evidence indicates male Neanderthals and human females interbred more often than opposite ...

The human genome is a rich, complex record of migration, encounters, and inheritance written over thousands of millennia.

A 2026 study finds sex-biased interbreeding, not genetic incompatibility, likely explains why Neanderthal DNA is scarce on the human X chromosome.