GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A, B, AB
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B, O
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A, O
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A, AB
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Detailed explanation-1: -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’. Q. A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?
Detailed explanation-2: -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-3: -Yes, it is possible for a parent with type A blood and another parent with type B blood to produce a child with type O blood. This can only occur under one condition and that is the condition that both of the parents are heterozygous. This means both of the parents would posses an “O” allele.
Detailed explanation-4: -The children of a man with type B blood and a woman with type AB blood could be type A, type B, and type AB, but not type O.