That's because sex — and gender roles, too —permeates all the way down to the most unreproductive of cell types. If you want ...

Transcriptionally “silent” Barr bodies maintain gene equality in male (XY) and female (XX) cells. How are these unique sex chromosomes formed? "The sex of a somatic cell as highly ...

Kyle Fellers and Anthony Foote sued administrators at Bow High School in south-central New Hampshire last year after they ...

X inactivation only occurs in cells with multiple X chromosomes, which explains why almost all calico cats are female. X inactivation exists in two different forms: random and imprinted.

(AP) — Kentucky's first female chief justice said Tuesday that she's “never ... to be either clouded or enhanced by my double ...

Researchers have uncovered the mechanism behind the arms race for mouse X and Y bearing sperm to fertilize an egg.

A federal judge ruled Monday that two fathers cannot wear pink wristbands with two X’s — the symbol for female chromosomes — drawn on them in opposition to a transgender high school athlete ...