Here’s a cheerful finding for those who say that males push females around too much: On the molecular level, it appears male genes may have to leave their homes for protection, researchers report."Home” is the X chromosome, which plays a key role in determining the sex of the carrier. A female has two X chromosomes, while a male has one X and one much smaller Y chromosome. Studies in mice and humans show an unusually large number of genes can jump from the X chromosome to non-sex chromosomes, a research team at the University of Chicago reports in the Jan. 23 issue of Science.
