condominance – 1. AB Blood Type. People with this blood type have A and B proteins at the same time. The ABO gene determine what blood type a person has, and everyone has two copies of this gene, one from each parent. There are several combinations of blood types that can result, but when a person has both an A and a B allele, it will lead to blood types visible in the blood, AB.
multiple allelism – gene of the ABO blood group system, and the human-leukocyte-associated antigen (HLA) genes.
sex–linked traits – hemophilia, red-green color blindness, congenital night blindness, some high blood pressure genes, Duchenne muscular dystrophy, and also Fragile X syndrome.
