The small size and isolation of the endangered population of Southern Resident killer whales in the Pacific Northwest have led to high levels of inbreeding. This inbreeding has contributed to their ...

As koalas in southern Australia have grown from a few hundred to almost half a million, the marsupials show signs of regaining lost genetic variation.

The genome of a once-endangered songbird shows extensive signs of inbreeding, according to a new study. Because inbreeding can negatively impact survival and reproduction, the results could guide ...

"Fifty years from now, will there be Masai giraffes? I don't know. I think it's a 50/50 proposition," Douglas Cavener, who has published a new study on the risks facing the species, told Live Science.

People have taken many steps in recent decades to help the Pacific Northwest’s endangered killer whales, which have long suffered from starvation, pollution and the legacy of having many of their ...

More inbred individuals in two populations of eastern massasaugas have lower reproductive output and survival. Measures to restore genetic fitness to these populations may be needed to prevent local ...

SEATTLE — A study released Monday found that a group of Southern Resident killer whales found off the west coast may be dying because of inbreeding, substantially impacting their lifespan. The study’s ...

Blood relations and kinship were not all-important for the way hunter-gatherer communities lived during the Stone Age in Western Europe. A new genetic study, conducted at several well-known French ...