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If both parents have type A blood then the baby should have type A blood.
or type O blood
blood type A has type A antigens.
blood type B has type B antigens.
If the blood type of the donor is different from the receivers blood type, the blood type of the revive can attack the different type of blood
a person with O+/- blood can only receive O+/- blood respectively. O+ can give blood to any other + blood type, and O- can give blood to anyone.
My elder sister have blood type AB, myself having blood type A and my younger brother having blood type O.