It takes a man to carry a Y chromosome, and it takes the Y chromosome to make sperm, which is necessary for human reproduction. So men are essential to the future of the species. But researchers have ...

A study of mice might explain why. By Gina Kolata It’s been known for more than half a century that many men lose their Y chromosomes as they age. But no one knew if it really mattered. The loss of Y ...

YOU REMEMBER THE picture. Y.A. Tittle is on his knees in the end zone after throwing an interception that was returned for a touchdown. Swollen hands on his thigh pads, eyes fixed on the grass, he is ...

Jenny Graves has received funding from the ARC and NHMRC and is a Fellow of the Australian Academy of Science. The Y chromosome, that little chain of genes that determines the sex of humans, is not as ...