X chromosome: Difference between revisions
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The X [[Chromosome|chromosome]] is one of the [[Sex Determination|sex chromosomes]] of mammals (the other being the [[Y chromosome|Y chromosome]]). Females have two X chromosomes, whilst males have one X and one Y chromosome. In the [[ | The X [[Chromosome|chromosome]] is one of the [[Sex Determination|sex chromosomes]] of mammals (the other being the [[Y chromosome|Y chromosome]]). Females have two X chromosomes, whilst males have one X and one Y chromosome. In the [[Somatic cells|somatic cells]] of females one X is inactivated by the formation of a [[Barr Body|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. | 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|Sex Linkage]] | 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|Sex Linkage]] | ||
Some individuals with [[Aneuploidy]] possess an odd number of X chromosomes, in such diseases like [[ | Some individuals with [[Aneuploidy]] possess an odd number of X chromosomes, in such diseases like [[Klinefelter syndrome]] (XXY) and [[Turner syndrome]] (XO) | ||
Revision as of 10:09, 28 November 2014
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)