Geneticists have found an interesting pattern in how early humans and Neanderthals interbred—and it wasn't balanced.

For nearly two centuries, a small brown frog living in Southeast Asian rainforests was considered a single, well-understood ...

Scientists at Penn measured Homo sapien DNA in the X chromosomes of male Neanderthal bones. They found 62% more sapien DNA than on other Neanderthal chromosomes. Their analysis: Male Neanderthals were ...

New genetic research suggests a common Southeast Asian frog long believed to be one species could actually be six or seven distinct ones.

Scientists analyzing Bornean fanged frogs found what was once thought to be one species may actually be several genetically distinct species.

In Lake Malawi, hundreds of species of cichlid fish have evolved with astonishing speed, offering scientists a rare opportunity to study how biodiversity arises.

It was a similar story with plant life: crops selected for greater production (wheat and barley were two of the first) were often in proximity to their wild relatives and exchanged genes. This entry ...

Interbreeding between Homo sapiens, Neanderthals, and Denisovans is presented as a network rather than a simple branching ...

A preference for pairings between male Neanderthals and female Homo sapiens may answer the question of why there are "Neanderthal deserts" in human chromosomes.

When Neanderthals and ancient modern humans interbred, the pairings were mostly between male Neanderthals and female humans. This finding helps explain why Neanderthal ancestry present in most humans ...