In cats, the fur pigmentation gene is X-linked, and depending on which copy of the X chromosome each cell chooses to leave active, either an orange or black coat color results. X inactivation only ...

Things are changeable in the aging brain, and the X chromosome clearly can teach us what’s possible.” Dena Dubal, MD, PhD The scientists created hybrid mice from two different strains of laboratory ...

Plus, the second X chromosome in female cells might explain why women tend to be more resilient to cognitive decline than men.