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, ...

Two-time Olympic gold medallist Caster Semenya secured a partial victory in her long legal battle over athletics sex eligibility rules on Thursday (Jul 10), as the European Court of Human Rights (ECHR ...

This Review describes the mechanisms by which the X chromosome regulates immune responses. The authors discuss how the effects of this chromosome can account for many of the immunological ...

Superman syndrome, also known as 47, XYY, is a condition in which males have an additional Y chromosome.

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 ...

Flip open a high-school biology textbook, and the rule seems tidy: two X chromosomes mean girl, and an X paired with a Y means boy. That much smaller Y chromosome carries the SRY gene, which is the ...

Researchers mapped Y chromosome loss across thousands of individual cells from human cancers, with disturbing results.

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 ...

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