HEREDITY
MULTIPLE ALLELES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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25 %
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50 %
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75 %
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100 %
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Detailed explanation-1: -IA/IB people have both phenotypes, because A and B express a special dominance relationship: codominance, which means that type A and B parents can have an AB child. If both the parents are AB then their genotypes will be IA/IB and this combination cannot give rise to O blood group.
Detailed explanation-2: -The chance for A blood group is 37.5% + 12.5% = 50% . The chance for B blood group is 12.5% . The chance for AB blood group is 37.5% .
Detailed explanation-3: -One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.