Females have one active X chromosome and one dormant X chromosome in each cell. But a study suggests that genes on the ...

Now researchers might have uncovered a source for this resilience: the second X chromosome in female cells that was previously considered ‘silent’. Why the sexes don’t feel pain the same way ...

Females carry two X chromosomes. One of them is ensconced in a corner in the cell called the Barr body, where it can't express many genes, and scientists thought it didn't do much of anything.

The sports world is abuzz with the recent announcement by World Athletics regarding the introduction of chromosome testing for female athletes. This decision, aimed at maintaining the integrity of ...

Alongside hormones, the sex chromosomes — X and Y — are one of the starkest biological differences between males and females, and they could help provide biological explanations for why these ...

In a surprise, work in mice has found that the dormant X chromosome in females can reawaken late in life and turn on genes that keep the brain healthy. UCSF researchers may have discovered how the ...

Females carry two X chromosomes. One of them is ensconced in a corner in the cell called the Barr body, where it can’t express many genes, and scientists thought it didn’t do much of anything. But the ...

NANJING, China (AP) — World Athletics president Sebastian Coe said Tuesday that the track and field’s governing body has ...

Dormant genes on the X chromosome may reawaken in old age, potentially giving the aging female brain a boost that the male brain doesn't receive. This phenomenon may help to explain why, on many ...

The reason female brains have less cognitive aging may be due to the reawakening of the dormant X chromosome late in life, which turns on genes that help sustain healthy brain cell connections.