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 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 ...

May 3 (UPI) --Biologists and conservation scientists have long been operating under the assumption that inbreeding should be avoided at all costs, but a new survey -- published Monday in the journal ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SEATTLE (AP) — People have taken many steps ...

"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.

PITTSBURGH – Bedbugs aren't just sleeping with you. They're sleeping with each other. Researchers now say that the creepy bugs have a special genetic gift: withstanding incest. It turns out that ...

PHILADELPHIA — Bedbugs that infest a room and spread within a building are often one big extended family, the offspring of a single female that begot sons and daughters that then interbred with ...