Learn how sex-biased interbreeding between Neanderthals and modern humans explains why Neanderthal DNA is largely missing from the X chromosome.

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

A new study suggests preeclampsia, a deadly pregnancy disorder, may have contributed to Neanderthal extinction.

Analysis of Neanderthal DNA revealed that the male Neanderthals regularly bred with female Homo sapiens, but this cross-species affection did not apply to male Homo sapiens and Neanderthal women. The study looked at the X chromosome of Neanderthals and found more human DNA than expected.

The discovery of ancient human cousins has long stirred wonder and debate. Early Neanderthal remains offered a glimpse into our distant past, prompting questions about how they lived and whether they mingled—or clashed—with early humans. The plot ...

Neanderthals disappeared from the fossil record approximately 40,000 years ago. Their extinction was a gradual process over thousands of years, and theories as to why include competition with modern humans and rapid climate change.

Interbreeding between Neandertals and ancient anatomically modern humans primarily occurred between male Neandertals and female humans, a new study suggests