Endurance dominance of east Africans in their genes

Researchers have found that the endurance running prowess if Ethiopia's athletes is partly dictated by their genes. As the online scientific service New Scientist http://www.newscientist.com reports, a recent study has established that such athletes are more likely to have certain variants of four Y chromosome genes compared with other Ethiopians. Although it is still unclear what the genes do or how influential they are, they are the first to be linked to the east Africans' dominance in endurance events.