Sex chromosomes are chromosomes, or packages of DNA, that are found inside the nucleus of all of your cells. There are two different kinds: X and Y, which determine whether you’re biologically male ...

Older female mice show poor spatial memory when their paternal X chromosome is inactive and only the maternal copy is active. This phenomenon could be responsible for variation in age-related ...

In female mammals, one of the two X chromosomes is usually inactive and forms the so-called Barr body. The image shows a cell nucleus with the Barr body marked in green. Unlike men, who carry one X ...

Eighty percent of patients with autoimmune diseases are female. These diseases are one of the top 10 leading causes of death for women under 65, and cases are increasing annually worldwide. There is ...

X-chromosome inactivation varies across different areas of brains. Here, fluorescent imaging data from a mouse reveal where the father’s X chromosome is most active (white) and least active (blue). A ...

The molecules that silence a woman’s second X chromosome can confuse the immune system, a new study suggests. By Carl Zimmer Women are much more likely than men to have their immune system turn ...

A new study provides new insight into height differences between adult men and women, demonstrating that Y chromosome genes contribute more to height than their X chromosome counterparts. A Geisinger ...

Women age differently from men when it comes to health—particularly in conditions like cardiovascular disease and neurodegenerative disorders such as dementia and Parkinson's. A team at the Technical ...