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"
Human Anatomy & Physiology (11th Edition)
11th Edition
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Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Transcribed Image Text:1. Codominance
In 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"
Genotype AB produces phenotype "type AB blood"
1. Perform a Punnett square cross between an individual with genotype Ao and BB. What genotypes and
phenotypes result from this cross?
1. Perform a Punnett square cross between an individual with blood type "O" and an individual with blood
type "AB." What genotypes and phenotypes result from this cross?
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