Man, chimp difference may have made us prone to cancer

Man, chimp difference may have made us prone to cancer
(EurekAlert)

A comparative genetic study led by Cornell University researchers suggest that some mutations in human sperm cells might allow them to avoid early death and reproduce, creating an advantage that ensures more sperm cells carry this trait. But this same positive selection could also have made it easier for human cancer cells to survive.

You win some, you lose some.