Human sexual chromosome is one of the biotechnology definitions that is target by personal medicine and genetic engineering for manipulate and finding better solution to cure the diseases.

The X and Y chromosomes are called “sex chromosomes” because they contribute to how a person’s sex develops. Most males have XY chromosomes and most women have XX chromosomes. But there are girls and women who have XY chromosomes. This can happen, for example, when a girl has androgen insensitivity syndrome.