The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the biological sex, reproductive organs, and sexual characteristics that develop in a person.

A new study reveals that the maternal X chromosome may accelerate brain ageing and increase Alzheimer's risk. Experiments on female lab mice showed that older mice with only the maternal X ...

Women are born with two X chromosomes and inherit one from each parent. But in every cell of their body, just one X chromosome is needed—so the other is randomly inactivated. Some cells use only ...

It could be linked to the way the body manages its X chromosomes. Humans possess two kinds of chromosomes, labeled X and Y.

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. The X chromosome passed from mom to ...

New research has begun to reveal just how maternal factors, such as the effects of the X chromosome and vitamin D levels during pregnancy, shape the health trajectory of a newborn. These findings ...

An international team of scientists has uncovered new insights into how the previously understudied duplicate X chromosome in women may contribute to Alzheimer's disease risk, according to a ...