It was already known that genes inherited from ancient retroviruses are essential to the placenta in mammals. Scientists have now revealed a new chapter in this astonishing story: these genes of viral origin may also be responsible for the more developed muscle mass seen in males.
Placenta in females, muscle mass in males: Dual heritage of a virus
Science Daily - 2 Sep 2016 22:22
It was already known that genes inherited from ancient retroviruses are essential to the placenta in mammals. Scientists have now revealed a new chapter in this astonishing story: these genes of viral origin may also be responsible for the more developed muscle mass seen in males.
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