The Women's Movement

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Science  31 Oct 1997:
Vol. 278, Issue 5339, pp. 805
DOI: 10.1126/science.278.5339.805

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When it comes to spreading genes around the world, scholars have often focused on the movements of men. But with new results from the Y chromosome (see main text), researchers are finding that spreading genes into new terrain may be chiefly women's work. The data show that variants in the Y chromosome, which sons inherit from their fathers, have a different geographic distribution from variants in mitochondrial DNA, which is passed from mother to daughter.