Question

ABO blood group is considered as an example of multiple allelism and Codominance. Explain?

Answer 1

ABO blood group is controlled by more than two alleles — I^A , I^B and i. A group I^A I^A ,I^A ,i, B group—I^B I^B , I^B i , AB group I^A , I^B , O group – ii

In AB blood group both I^A and I^B alleles behave as dominant genes, producing both A and B antigens.