LifeA wolf's dark pelt is a gift from the dogs The gene for black fur was bred into Yellowstone wolves by hybridisation with dogs, but may have spread because female wolves find it sexy ¿ìè¶ÌÊÓÆµ
Life'Knockout' rats could aid study of psychiatric illness Rats engineered to lack a certain gene could help researchers develop new medicines – now a key hurdle in their creation has been overcome ¿ìè¶ÌÊÓÆµ