(This article uses ‘women’ and ‘female’ to describe people with two X chromosomes and no Y chromosome, reflecting the language of the study. Nature recognizes that not all people who ...

how sex chromosomes might influence how the brain ages. "There are very important and potentially therapeutic targets that ...

Humanity has been hunting for sex-based differences in the brain since at least the time of the ancient Greeks, and it has ...

For example, when examining differences between male and female beetles, American researcher Nettie Stevens recognized patterns of chromosomes that differed between the two sexes. In particular ...

Females have two X chromosomes (XX). Males have one X and ... Only in very rare cases a female will have two recessive alleles and be a sufferer. Affects nerve cells in the brain, leading to ...

Females carry two X chromosomes. One of them is ensconced ... But the UCSF team discovered that as female mice reached the equivalent of about 65 human years, their 'silent' second X started ...

Female (XX) mammals inherit one X chromosome from each parent, but males (XY) receive an X from their mother and a Y sex chromosome from their father. X and Y chromosomes determine not only the ...

two X chromosomes in the nucleus of its original egg cell and it will become a female; a Y and an X chromosome and it will become a male. But exactly what happens in the womb to make a boy or a girl?

The head of track's governing body on Tuesday announced a policy change designed to "doggedly protect the female category": ...