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H-Y Evolution
Authors:P. Pechan  M. Tracey
Affiliation:(1) University of Waterloo, Waterloo, Ontario, Canada;(2) Department of Biology, Florida International University, 33199 Miami, Florida, USA
Abstract:Summary The female: male sex ratio in litters born to C57 black mice immunized with male spleen preparations is 2ratio1 and males were stillborn. In additionDrosophila busckii males are H-Y antigen positive. It is argued that H-Y is the primary testicular determinant and that this role is evolutionarily ancient.
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