Blood Types - Co-dominant alleles

Question

Human blood type is determined by co-dominant alleles. There are three different alleles, known as A, B and O. The allele for type A blood (A) is co-dominant to the allele for type B blood (B). The allele for type O blood (O) is recessive to both the A and the B allele. Therefore, individuals with type A blood can have the genotype AA or AO, type B individuals can have the genotype BB or BO, type AB individuals have the genotype AB and type O individuals have the genotype OO. Can two people with type B blood have a child with type O blood? Explain how you arrived at your answer.

Answer 1

Sure they can. The answer is given in the sentence: B individuals can have the genotype BB or BO

So if you have BO and BO their kid can be OO