How is sex determined in human beings?

Explanation

Genes determines sex in human beings are located on two sex chromosomes , called allosomes . In mammals , sex determination is associated with chromosomal difference between the two sexes , typically XX females and XY males .23 pairs of human chromosomes include 22 pairs of autosomes (44A) and one pair of sex chromosomes (XX or XY) . Females are homogametic producing only one type gametes (egg) , each containing one X chromosome while the males are hetrogametic produing two types odsperms with X and Y chromosomes . An independently evolved XX , XY system of sex chromosomes also exist in Drosophila .