QABiology › A man with type A blood marries a woman with type B blood. Their child has type O blood. What is the genotype of the man?
Q

A man with type A blood marries a woman with type B blood. Their child has type O blood. What is the genotype of the man?

A

Typically, there are two types: type A and type B. An individual is born with either, both, or none of the blood groups.

If the man has Blood types A or O on either chromosome and the woman has Blood types B or O on the other, it means that they both transferred the blood type O to their offspring.

In other words, a mother with blood type B, and a father with blood type A, produce offspring with blood type O if the father’s genotype is either type BB or type BO.

It means both parents have heterozygous blood types.

2 months ago
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