Researchers at the Crick have uncovered which genes on the Y chromosome regulate the development of sperm and impact ...

Researchers have uncovered which genes on the Y chromosome regulate the development of sperm and impact fertility in male mice. This research could help us understand why some men don't produce enough ...

The executive order’s definitions of male and female left room for interpretation contrary to the spirit of the order.

President Trump issued an executive order declaring that the U.S. government would only recognize a person’s sex assigned at birth.

Trump’s order says it is intended to protect women’s spaces from those who “self-identify” as women. It defines the sexes in ...

Trump’s executive order on “Gender Ideology Extremism and Restoring Biological Truth to the Federal Government,” intended as an attack on transgender American s and disingenuously disguised as ...

A study finds that female mice using only a maternal X chromosome experience faster brain aging, leading to memory loss.

During his inauguration speech Monday, President Trump promised to make America binary again.

In the hours after taking office for the second time, President Donald Trump signed numerous executive orders in quick ...

Researchers found that female mice using only maternal X chromosomes showed faster cognitive decline, which could help explain the variation in brain aging between the sexes ...

If Josie entered a "Most Handsome Cat on the Internet" contest, he'd win by a landslide. This is one kitty that only comes ...

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is ...