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The findings may also explain differences in disease susceptibility between men and women.
The sex chromosomes of vol.1 have evolved over millions of years, originating from two identical chromosomes. Now, males possess one X and one Y chromosome and females have two Xs.
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The presence or absence of the Y chromosome is what determines sex—the Y chromosome contains several genes key to testes formation. But while the X chromosome has remained large throughout evolution, with about genes, the Y chromosome lost most of its genetic material early in its evolution; it now retains less than Bio Seeker vol.1 A those original genes. Login Register Login with Facebook English. Add to Favourites Current rating 2.
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Description:Apr 23, - Two new analyses of the male sex chromosome have concluded that the sex of a developing fetus—may impact human biology in a big way.