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

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 ...

Problems in the formation of chromosomes, gonads ... while the ovaries of a normal 46,XX female secrete neither. In CAH, the absence of a critical enzyme allows a 46,XX fetus to produce androgens ...

Old female mice had more PLP1 in the hippocampus than old male mice, suggesting that the extra PLP1 from the second X chromosome had made a difference. To test whether PLP1 could explain the ...

“It's really great to see such a large-scale study of this magnitude.” During early female development, one of the two X chromosomes is transcriptionally silenced through X inactivation. This ensures ...

answering an age-old question of how most women outlive men and retain their cognitive abilities longer. Females carry two X chromosomes. One of them is ensconced in a corner in the cell called the ...