HEREDITY
INCOMPLETE DOMINANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Two parents think THEIR baby was switched at the hospital. Lulu (mom) has blood type A, and Caesar (dad) has blood type B. The baby has blood type AB. Could the baby actually be theirs?
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No, because neither parent’s genotype matches the baby
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No because the mom is only Type A
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Yes because both parents have type A and Type B
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Yes because if mom is A and dad is B-the baby could have genotype AB
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Explanation:
Detailed explanation-1: -Two parents with A blood type can produce a child with either A or O blood types. Two parents with B blood type can produce a child with either B or O blood type. One parent with A and another with B can produce a child with A, B, AB or O blood types.
Detailed explanation-2: -Someone with blood type AB must have both the A and B alleles. The genotype must be AB.
Detailed explanation-3: -Thus, if one parent is homozygous for type A blood and the other is homozygous for type B, the offspring will have a new phenotype, type AB. In people with type AB blood, both A and B proteins are expressed on the surface of red blood cells equally.
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