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 ...

Last September, a group of parents and community members gathered at Bow High School and wore pink armbands with “XX” on one ...

Deep within the cells of mice, a genetic arms race is unfolding between X and Y chromosome genes, battling for dominance in sperm. Researchers have now discovered how these gene families compete by ...

Men have an X and a Y chromosome, while women have two X chromosomes. Scientists have long dismissed one of the female X ...

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.

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 ...

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