Can a baby with blood type O have a father with blood type B? Why or why not?
1 Answer
Nov 29, 2016
Yes, because the father can be genetically BO and if the mother also has at least one gene for O, the baby can receive two genes for O from each of them.
Explanation:
Genetically, a person of blood group B can be either BB or BO; that is, s'he can have two genes for the B surface antigen or one gene for the B surface antigen and still test as B.
In the case given above, if the father is B blood group and is genetically BO, and the mother is AO, OO, or BO (meaning, she has at least one gene for O - the absence of A or B surface antigen), the baby can potentially receive one O gene from the father and one O gene from the mother and test as O.
