What makes a man a man? Socially, that is a complicated question. Genetically, however, it is as simple as a single Y chromosome.
But guys, that chromosome is in trouble.
In a new study, researchers say there is a dramatic loss of genes from the human Y chromosome that eventually could lead to its complete disappearance -- in the next few millennia. While the Y chromosome's degeneration has been known to geneticists and evolutionary biologists for decades, the study sheds new light on some of...Full Story