"You either have XX or XY chromosomes," Rep. Nancy Mace, R-S.C., wrote Feb. 20 on X. "Those are the options." Most commonly, a person is born with two X chromosomes (female) or an X and a Y (male).

The idic(Xp) chromosome was derived from a patient with Turner's syndrome. Because the X inactivation center must be located on all abnormal X chromosomes that are subject to inactivation ...

A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

Females (XX) carry twice as many X-linked genes on their sex chromosomes as males (XY). How do cells control gene expression to manage this potentially lethal dosage problem? A prime example of X ...

Genetic screening can be a game-changer for women’s health, enabling proactive steps in preventing and managing diseases like ...

Turner syndrome, a genetic developmental disorder in females is caused by a missing or incomplete X- chromosome. Girls are short and have dysfunctional ovaries.