can a child be blood type B when mother is type O and father is type AB
Each biological parent donates one of their two ABO alleles to their child. A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter.This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).Inherited Blood type of child O from the mother A from the father A O from the mother B from the father B. mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter.