GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0%
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25%
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50%
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75%
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Detailed explanation-1: -Since the mother has A blood group, the child can not be homozygous for B blood group. The reason is that he will receive one IB allele from father with B blood group but the mother with A blood group can transmit only IO allele for the child to have B blood group. Hence the genotype of child will be IB IO.
Detailed explanation-2: -Final answer: A, B, AB, and O are the possible blood groups of offspring when a man with blood group ‘A’ marries a woman with blood group ‘B’.
Detailed explanation-3: -When one of the inherited alleles is A and the other is B, the genotype is heterozygous and the blood type is AB. AB blood type is an example of co-dominance since both traits are expressed equally. Type A: The genotype is either AA or AO.
Detailed explanation-4: -A child from parents with blood group ‘A’ and ‘B’ can have blood group O. If genotype of one parent is IAI and that of another parent is IBI; then gametes from the parents can have any one of the genotypes, i.e. IA or IB or I.