1. Codominance n the human "ABO" blood group system, blood type is determined by three alleles affecting antigens on the surface of red blood cells. The three alleles are "A," "B" and "o." The "o" allele is recessive to both the "A" and the "B" alleles while "A" and "B" are codominant. This leads to the following: Genotype AA and Ao produce phenotype "type A blood" Genotype BB and Bo produce phenotype "type B blood" Genotype oo produces phenotype "type O blood"

1. Codominance n the human "ABO" blood group system, blood type is determined by three alleles affecting antigens on the surface of red blood cells. The three alleles are "A," "B" and "o." The "o" allele is recessive to both the "A" and the "B" alleles while "A" and "B" are codominant. This leads to the following: Genotype AA and Ao produce phenotype "type A blood" Genotype BB and Bo produce phenotype "type B blood" Genotype oo produces phenotype "type O blood"

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 13RQ: The ABO blood groups in humans are expressed as the IAlB, and IAalleles. The allele encodes the A...

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