Yes.In the case that his wife has an A blood group,either A+ or A-. Yes.In the case that his wife has an A blood group,either A+ or A-. Yes. In the case that the mother has an blood group of A, (either A+ or A-).
no
If the mother has type negative blood, and the father and child have type positive blood, the mother's blood may begin to attack the child's.
Yes.
Sure, if the mother is Rhesus (D) positive
rarely can be
yes, absolutely
Of course!
it can be rare only
A father with the blood type can be b negative can have a child even a son that is A positive. The blood of a child comes from one or the other parent. If the mother is A positive the child can be as well.
Yes, as long as the mother's blood group is Rh positive, the baby can be Rh positive. Only one parent need be Rh positive for this to occur.
Yes, a father with A negative blood can have a child with A positive blood. If he does, the mother must have a positive Rh factor, and the mother's blood type may be any of the possibilities.
Yes -- There is not one gene that determines blood type. The father can be heterozygous for the A blood type. This just means that the father has one A gene and one O gene. Since the A gene is dominant, the blood from the father tests as A. A separate gene determines the positive and negative part of the blood grouping. This is the RH factor. Again the father can have one gene that is positive and one that is negative, positive is dominant. Same analysis for the mother, mixed B and O genes with B as dominant, positive and negative for RH factor, positive dominant. The egg from the mother could contain the B and RH negative (50% chance of each). The sperm from the father could contain the A and RH negative. Thus the baby would be AB negative (no positive from either parent).