Men are obsolete ... in five million years

“You need a Y chromosome to be male,” said Prof Graves, from Australia.

“Three hundred million years ago, the Y chromosome had about 1,400 genes on it, and now it’s only got 45 left, so, at this rate, we’re going to run out of genes on the Y chromosome in about five million years. The Y chromosome is dying and the big question is what happens then.”