One of the major risk factors for autoimmune diseases is being born with two copies of the X chromosome. For example, women—who typically carry two...


The Fragile Y

June 18, 2014

Y chromosomes have come and gone many times during evolutionary history. Take beetles. When Heath Blackmon and Jeff Demuth modeled sex chromosome evolution in more than...


Do aging males make poorer quality sperm? Older mothers face a well-established risk of producing eggs with chromosome abnormalities, but it is less clear how...