The sex chromosomes are the X chromosome and the Y chromosome. In a man, both an X and a Y chromosome are present, giving an XY configuration. In a woman, there are two X chromosomes, giving an XX ...

The 23 rd chromosome base pair contains what are known as our sex chromosomes. For most females, this pair contains two X chromosomes, while for most males, it contains one X chromosome and one Y ...

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 ...

The Y chromosome in primates — including humans — is evolving much more rapidly than the X chromosome, new research on six primate species suggests. For instance, humans and chimpanzees share ...

It's all about how the body handles females' extra X chromosome, Stanford University researchers reported Thursday — a finding that could lead to better ways to detect a long list of diseases ...

Female cells have two X chromosomes, whereas males have one X chromosome and one Y chromosome (at least in mammals). Different animals compensate for this sort of disparity in different ways.

As per Charles Darwin’s theory of evolution, fitness is an organism’s ability to survive and pass on its genes better suited to its environment to future generations. Sometimes, Darwin’s ...

Things are changeable in the aging brain, and the X chromosome clearly can teach us what’s possible.” Dena Dubal, MD, PhD The scientists created hybrid mice from two different strains of laboratory ...

Daughters inherit two X chromosomes (one from the mother and one from the father), while sons inherent an X chromosome only from the mother. In new research published in Molecular Cell ...

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 ...

Most people have 23 pairs of chromosomes, including a pair of sex chromosomes that can be either an X chromosome or a Y chromosome. Having two X chromosomes usually designates a human as ...

Researchers have now found another difference between cancer cells and normal cells: the X chromosome, typically only inactivated in XX female cells, can be inactivated across different male ...