PATHOLOGY

Detailed explanation-1: -Each person normally has one pair of sex chromosomes in each cell. Females have two X chromosomes, while males have one X and one Y chromosome. Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells.

Detailed explanation-2: -In mammals, primary sex determination is strictly chromosomal and is not usually influenced by the environment. In most cases, the female is XX and the male is XY. Every individual must have at least one X chromosome. Since the female is XX, each of her eggs has a single X chromosome.

Detailed explanation-3: -Classical disorders of sex chromosome are Klinefelter syndrome, XX male, XYY male, Turner syndrome, XXX female, and XY female.

Detailed explanation-4: -One pair of chromosomes, the sex chromosomes, helps determine whether a person will develop male or female physical sex characteristics. There are two types of sex chromosomes, X and Y. Females usually have two X chromosomes and are labeled as (46, XX) and males usually have one X and one Y chromosome (46, XY).