26.a man has A type blood and his wife has type B blood.a physician types the blood of their children and is amazed to find one each of the 4 blood types among them.he is not familiar with genetics and calls upon u to explain how such a thing would happen.how could u explain?
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There's nothing to get amazed to find all the four types of blood groups in the progeny, provided the parental genotypes are AO and BO.
The four types of blood groups included A, B, AB and O.
Had the parental genotypes been AO and BO, the progeny would include all the four blood groups A with genotype AO, B with genotype BO, AB with genotype AB and O with genotype OO.
It happens only in this case and not in any other as the alleles A and B are co dominant to each other and completely dominant over the allele O.
The four types of blood groups included A, B, AB and O.
Had the parental genotypes been AO and BO, the progeny would include all the four blood groups A with genotype AO, B with genotype BO, AB with genotype AB and O with genotype OO.
It happens only in this case and not in any other as the alleles A and B are co dominant to each other and completely dominant over the allele O.
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