The X chromosome occupies an exceptional place in the mammalian genome. Together with the Y chromosome, the X chromosome differentiates the sexes. Males have one X chromosome and a Y chromosome and females have two X chromosomes. Because of this...

The X chromosome is one of two sex chromosomes and is present in nearly all animals that undergo sexual reproduction. Depending on the organism, it may occur alone, in two copies, or paired with a Y chromosome. The sex of an individual is directly...

Chromosomes whose contents are different in the two sexes, usually labeled X and Y; the male species has the XY chromosomes and the female species has the XX chromosomes. In DNA profiles these chromosomes are referred to as...

A chromosome responsible for sex determination. Two copies are present in the genome of the homogametic sex and one copy in the heterogametic sex. The human female has two X-chromosomes and the male has one...

The X chromosome is one of the two sex-determining chromosomes in many animal species, including mammals (the other is the Y chromosome). It is a part of the XY sex-determination system and X0 sex-determination system. The X chromosome was named for its...