What is chromosome X

Females have two x chromosomes in their cells, while males have one x and one y.Y chromosome is smaller in size and is one of the smallest chromosomes in the human genome.Humans and most other mammals have two sex chromosomes (x and y) that in combination determine the sex of an individual.The chromosome image below is the online version of chromosome x depicted on the human genome landmarks poster.The x chromosome is one of the two sex chromosomes in humans.

Sometimes, the x chromosome undergoes a transient inactivation.Fragile x syndrome is a genetic condition involving changes in part of the x chromosome.People with this condition have an extra copy of the genetic material located on the long arm (q) of the x chromosome in each cell.However, it represents heterogametic sex.In a man, both an x and a y chromosome are present, giving an xy configuration.

The x chromosome represents 5% of the total dna in women and about 2.5% of the total dna in men.X chromosome is five times larger in size than y chromosome.Humans and most other mammals have two sex chromosomes that in combination determine the sex of an.The x chromosome is one of the two sex chromosomes that are involved in sex determination.The same x chromosome remains inactivated in all subsequent cell generations.

Silencing, once established, is stable:Chromosomes are made of dna, and genes are special units of chromosomal dna.Click here for printable image.