Biology

Raymond Nielsen

4 October, 14:56

In blood types, a person can have type A, type B, type AB or type O blood.

Types A and B can either be homozygous dominant or heterozygous. Type O blood is always homozygous recessive. And type AB is co-dominant - so the person has a dominant allele for A and a dominant allele for B.

A woman who has type AB blood marries a man with type O blood.

Possible Phenotypes of their children:

Type A blood:

Type B blood:

Type AB blood:

Type O blood:

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