What stands out the most about this ancient cephalopod sex chromosome is how little the chromosome has changed over time.

New research shows that female mice expressing only a maternal X chromosome experience faster brain aging and cognitive decline compared to those expressing both maternal and paternal X chromosomes.

Women are born with two X chromosomes and inherit one from each parent. But in every cell of their body, just one X ...

On his first day back in power, President Donald Trump issued an executive order on gender that essentially states that males ...

Females carry two X chromosomes, after inheriting one from each parent. In order to stop serious problems from arising, cells ...

Female mammals typically carry two X chromosomes — one from each parent — and a new study suggests that the maternal X is linked to faster brain aging.

Scientists at University of Oregon discover one of the oldest known animal sex chromosomes in California two-spot octopus.

The X contains more genes related to brain function than does any other chromosome. “The X chromosome may be a treasure trove of genes that influence cognition, and these could be therapeutic targets, ...

Researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has likely been around for 480 million years, since before octopuses split apart from the nautilus on ...