AP BIOLOGY

Detailed explanation-1: -Blood type is inherited through an inheritance pattern called codominance. In humans, red blood cells have proteins with sugars attached to the surface of red blood cells. These sugars act as antigens, structures that can activate the immune system. Those antigens come in two forms: type A antigens and type B antigens.

Detailed explanation-2: -Blood Groups in Humans The gene I, which determines the blood type, exists in three allelic forms, which are IA, IB and i. The allele IA produces surface antigen A on the red blood cells and the allele IB produces the surface antigen B on the red blood cells and the allele i specifies no antigen.

Detailed explanation-3: -Multiple alleles are non-mendelian inheritance patterns in which more than two alleles code for the same trait in a species. Multiple alleles can have more than two phenotypes. When numerous alleles are involved in the expression of a trait, a variety of dominance patterns emerge.

Detailed explanation-4: -The ABO blood type is inherited in an autosomal codominant fashion. The A and B alleles are codominant, and the O allele is recessive.

Detailed explanation-5: -There are three different alleles for human blood type, known as IA, IB, and i. For simplicity, we can call these alleles A (for IA), B (for IB), and O (for i). Each of us has two ABO blood type alleles, because we each inherit one blood type allele from our biological mother and one from our biological father.