Articles on testes

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Testosterone is primarily made in the testes, and creates many of the characteristics we see in adult men. from www.shutterstock.com

You need more than just testes to make a penis

Disorders affecting penis development are among the most common birth defects seen in humans, and rates are on the rise.
It’s just a tiny part of the Y chromosome that kickstarts the development of testes. Kelly Searle/Unsplash

What makes you a man or a woman? Geneticist Jenny Graves explains

There are many cultural and social factors involved in making a baby into a man or a woman. But biologically speaking, sex starts when you're just a tiny group of cells in your mother's uterus.

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