Could a man with type B blood and a woman with type AB produce a child with type O blood?

The possible genotypes of a man with blood type B are BB or BO and the genotype of a woman with blood type AB is AB. The child would receive an A allele or a B allele from the mother and a B allele or an O allele from the father. Therefore, the child could not possibly be of blood type O.

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c- cold periods in earth's history during which glaciers covered much of the surface.

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