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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