Filed at 5:18 p.m. ET Women get more work out of hundreds of genes on the X chromosome than men do, and that could help explain biological differences between the sexes, a new study says. The results imply that women make higher doses of certain proteins than men do, which could play out in gender differences in both normal life and disease, researchers said. So far, however, none of the genes identified in the study has been linked to any such observable differences, said senior study author Huntington Willard of Duke University. He and Laura Carrel of Pennsylvania State University...