In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next ...

Dormant genes on the X chromosome may reawaken in old age, potentially giving the aging female brain a boost that the male ...

World Athletics president Sebastian Coe says the track and field’s governing body has approved the introduction of cheek ...

Preserving the integrity of competition in the female category is a fundamental principle of the sport of athletics,” the ...

Women have a higher proportion of key immune cells between puberty and menopause, which may be linked to the sex hormone ...

"The primary sex hormones - oestrogen in females and testosterone in males - are thought to play a role in these differences, as are the sex chromosomes (XX in people registered female at birth, and ...

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 ...

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 ...

World Athletics president Sebastian Coe announced Tuesday that female track and field athletes will undergo random genetic ...