Q. Mother and father of a person with “” blood group have “” and “” blood group respectively. What would be the genotype of both mother and father?

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A

Mother is homozygous “A” group and father heterozygous for “B”.

B

Mother is heteroozygous “A” group and father homozygous for “B”.

C

Both mother and father are heterozygous for “A” and “B” group respectively.

D

Both mother and father are homozygous for “A” and “B” group respectively.

Solution:

blood group in humans is an example for multiple allelism. The genotype of the person with blood group is or ii. Since the mother and father possess and blood groups respectively, their genotypes should be heterozygous. and are dominant genes responsible for and blood group respectively. Hence the genotype of mother with blood group is or and the genotype of father is or .

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