In the late 1990s, Olympics officials were suddenly eager to exit the business of testing women’s DNA. After three decades of requiring all women athletes to sit for chromosome tests in order to ...

Did you know men can lose their Y chromosome as they age An expert explains how this genetic glitch impacts your heart increases disease risk and the lifestyle changes that can slow it down ...

Men tend to lose the Y chromosome from their cells as they age. But because the Y bears few genes other than for male ...

Humans typically have 46 chromosomes arranged in 23 pairs. One of these pairs determines biological sex at the time of conception. Males usually have one X chromosome and one Y chromosome. The ...