The sex eligibility case of champion runner Caster Semenya has been one of the most contentious and most complex that sports ...

A top European court ruled Thursday that the Swiss judiciary did not give double Olympic champion Caster Semenya a fair trial ...

A neglected piece of the Alzheimer's puzzle has been getting increased scientific attention: why women are twice as likely as ...

Chromosomes should dictate who competes against who People with an XY chromosome combination have more physical strength (especially upper body strength) than people with an XX chromosome combination.

X Y Chromosomes Iron Deficiency Can Cause Sex Reversal in Mouse Fetuses Pregnant mice without enough iron can have genetic male fetuses with ovaries. Posted June 16, 2025 | Reviewed by Monica ...

A top European court will decide Thursday whether double Olympic champion Caster Semenya can be required to lower her testosterone levels to compete as a woman, in a key decision ...

She also said it was possible to have an XY chromosome while being "totally or partially insensitive to testosterone," as was the case with Spanish hurdler Maria Jose Martinez-Patino, who after ...

A top European court Thursday said a Swiss court did not give double Olympic champion Caster Semenya a fair trial in a much-awaited appeals ruling over contested gender testing.

X Y Chromosomes Iron Deficiency Can Cause Sex Reversal in Mouse Fetuses Pregnant mice without enough iron can have genetic male fetuses with ovaries.

Nine thousand years ago, humans began domesticating cats. Nine hundred years ago, before the advent of intentional cat breeding, a genetic mutation gave rise to the first orange cat. Days ago, ...