Now researchers might have uncovered a source for this resilience: the second X chromosome in female cells that was previously considered ‘silent’. Why the sexes don’t feel pain the same way ...

Plus, the second X chromosome in female cells might explain why women tend to be more resilient to cognitive decline than men.

Scientists discover that women's second X chromosome awakens later in life, expressing genes that protect the brain from aging.

When X-linked genes evade silencing on the “inactive” chromosome in XX cells, some protect women from diseases such as cancer, but others seem to promote conditions such as autoimmunity. Amber Dance ...

Females have one active X chromosome and one dormant X chromosome in each cell. But a study suggests that genes on the ...

Among the many marvels of life is the cell's ability to divide and thus enable organisms to grow and renew themselves. For ...