X chromosome

The X chromosome is one of the sex chromosomes of mammals (the other being the Y chromosome). Females have two X chromosomes, whilst males have one X and one Y chromosome. In the somatic cells of females one X is inactivated by the formation of a Barr Body.

X chromosome is a sex chromosome in human being. There are totally two sex chromosome in human, the other sex chromosome is Y chromosome. Each persone have one pair of sex chromosome in each cells. There are two X chromosome in the Female and One X chromosome and one Y chromosome in the male.

The X Chromosome contains a number of genes, therefore a number of genetic traits/diseases/defects can affect Males (with only one X allele) and Females (who have 2 copies). The phenotypic expression of a gene on an X or Y chromosome is known as Sex Linkage

Some individuals with Aneuploidy possess an odd number of X chromosomes, in such diseases like Klinefelter syndrome (XXY) and Turner syndrome (XO)