PATHOLOGY

Detailed explanation-1: -Each person receives one copy of a gene pair from his mother and one from his father. Even though you get half of your genes from your mother and half from your father, each of your parents contributes to all your traits. For the each trait, there are different versions of a gene.

Detailed explanation-2: -The reason we have two copies of each gene is that we inherit one from each parent. In fact, it is the chromosomes we inherit and the two copies of each gene are located on paired chromosomes. Recall that in meiosis these chromosomes are separated out into haploid gametes.