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What are the chances of a woman with blood type b and a man with blood type ab having a child with type 0?

Answer:
There is no chance that this baby would have the blood type O. In order for someone to have the blood type O, the genotype must be IoIo. That means that each parent would have to have an O allele in their genotype. In this case only the mother has the possibility of having an O allele.

Genotypes of blood type A: IbIb, IbIo
Genotype of blood type AB: IaIb
Genotype of blood type O: IoIo

here is a punit square to show you

heterozygous mommy heterozygous daddy
IbIo IaIb

Ib Io
Ib IbIb IbIo

Ia IaIb IbIo

This child would have 75% chance of having the blood type B and 25% chance of being type AB
First answer by Lindz3. Last edit by Lindz3. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 1 [recommend question].

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