A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

Researchers at Linköping University in Sweden made an unexpected discovery while investigating genetically unique women.

UCSF researchers found that brain cells age more quickly when they rely solely on the X chromosome inherited from a female's ...

Gene editing techniques may eventually allow trisomy to be treated at the cellular level, according to an in vitro ...

Researchers at Linköping University in Sweden made an unexpected discovery while investigating genetically unique women.

Testosterone therapy nearly halves mortality in men with Klinefelter syndrome, highlighting the need for early diagnosis and ...