NEET BIOLOGY

Detailed explanation-1: -Inheritance pattern of blood types can be modelled out by codominance from AB blood type where both alleles for A and B antigens are expressed on red blood cells and multiple alleles since blood type can either be type A, B or O. Therefore, the correct answer is letter (B) codominance and multiple alleles.

Detailed explanation-2: -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.

Detailed explanation-3: -The human ABO blood group system exhibits codominance. The system consists of three alleles A, B, and O. Both A and B are dominant in relation to O, and therefore blood group A can have the genotype AA or AO. Blood group B can have the genotype BB or BO.

Detailed explanation-4: -ABO blood grouping in human beings is controlled by three alleles namely IA, IB and IO. These are basically the three alternative forms (alleles) of the gene I. Hence it is an example for multiple allelism. Among the three alleles IA and IB are dominant over IO/i, which is why this case is also an example for dominance.

Detailed explanation-5: -Codominance is the most common pattern in blood group genetics. For example, in the ABO system, if both A and B alleles are inherited, then both A and B antigens are expressed on the RBC (blood group AB).