A new finding in mice rewrites the textbook explanation of the male sex-determining gene, Sry. It might also help us better understand how males and females come to be.
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How embryos develop, evolution and sexual pleasure all help explain why men have nipples. But ‘man boobs’ are a different story.
Birds have some of the most amazing sex differences of any animal. They can control the sex of offspring, and even produce rare half-male, half-females. And their sex genes and chromosomes are quite different from ours.
Many babies are born with a genetic variant that can result in the child being neither a typical boy or girl. There has been considerable debate about whether the child should be treated.
Individuals carrying the male sex chromosomes (XY) can develop as females in the absence of a particular enzyme, according…
Top contributors
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Jenny Graves is a Friend of The Conversation.Distinguished Professor of Genetics and Vice Chancellor's Fellow, La Trobe University
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Deputy Director of the Murdoch Childrens Research Institute, Murdoch Children's Research Institute
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Adjunct Senior Lecturer, UNSW Sydney
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Emeritus Professor of Developmental Biology, The University of Queensland
