摘要: HUMAN EVOLUTIONWhen it comes to spreading genes around the world, scholars have often focused on movements of men. But with new results from Y chromosome ([see main text][1]), researchers are finding that into terrain may be chiefly women's work. The data show variants in chromosome, which sons inherit their fathers, a different geographic distribution mitochondrial DNA, is passed mother daughter. [1]: http://www.sciencemag.org/cgi/content/short/278/5339/804