A gene pair is made of two alleles. These two alleles making up a gene pair are inherited from the parent. One is typically gotten from the father, and the other from the mother. These copies of genes are contained in the chromosomes, and influence the performance of the cells.
There are different ways by which alleles interact with each other, and these are referred to as inheritance patterns. As mentioned earlier that chromosomes contain genes. There are basically two chromosomes that determine the sex of a baby, and these are the X and Y chromosomes. The Y chromosome is basically inherited from the father, while the X chromosome is inherited from the mother.
The Y chromosome is inherited through the sperm, while the X chromosome is inherited through the egg, but the X chromosome can also be gotten from the father. When an X chromosome is released by the father, the baby turns to be a female; but if Y chromosome, the baby would turn out to be a male.