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Y chromosome

   Also found in: Dictionary/thesaurus, Medical, Financial, Acronyms, Wikipedia, Hutchinson 0.01 sec.
Y chromosome [′wī ′krō·mə‚sōm]
(genetics)
The sex chromosome found only in the heterogametic male sex, as in mammals andDrosophila.


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Scientists at Penn State University (PSU) found that the male Y chromosome evolved at a much more rapid pace than X chromosome, which both males and females carry.
So if the Y chromosome from a man fertilizes the egg, She will get pregnant with a baby boy.
In this condition, the development of XY over XX embryos is affected because the presence of the Y chromosome sets the embryo on a path of male reproductive development that remains incomplete due to a lack of functional androgen receptors.
 
 
 
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