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

In truth, biological sex, like a lot of scientific categories, is nuanced. It's defined by multiple criteria – including ...

Trump’s definition of sex is rigid and unforgiving ... will determine its fetal fate of becoming male or female. If the Y chromosome is present in an embryo, “undifferentiated” gonads ...

Asceticism is the practice of denial of physical or psychological desires in order to attain a spiritual ideal or goal, often ...

There is an ongoing effort by the Trump administration to erase the existence of transgender people, with help from others.

But “sex chromosomes do not always determine the reproductive pathway that the individual follows,” Feinberg said. For example, there are conditions in which a person may be born with a Y ...

Texas Attorney General Ken Paxton declared Friday that state court orders to change the sex markers on Texas birth ...

The SRY gene, which is found on the Y chromosome and is responsible for ... or sex traits — opposes sports restrictions based on definitions of sex that rely on reproductive biology and genetics ...

While definitions of true respect tend to look ... encompassed in examples of people who are born with combinations of X and Y chromosomes like "XXY." So, while you might have been taught a ...