No. For two reasons: an "A" and an "O" can never produce "B," and positve blood types will never yield a negative one.
Given that the mother's DNA is A and the child is A positive, the father's DNA must also contain the A antigen. The father could be A positive, A negative, AB positive, or AB negative.
Yes. The father's phenotype is AO+*; the mother's is OO--.
for sure
The father's blood type could be either A positive or A negative. The children inherited the A antigen from the father, resulting in their blood type as A negative. The Rh factor (positive or negative) is inherited separately, so the father could be either positive or negative.
No. The child will be type O+ or O-.
If the mother is A negative, and the father is B positive, they could have children who are A negative, A positive, B negative, B positive, AB negative, AB positive, O negative, or O positive.
Yes.
no
no
o positive
yes
No. They can have an O positive, an O negative, A B positive, or a B negative child.
Yes, if the father is heterogeneous positive.
Yes. The father's phenotype is AO+*; the mother's is OO--.
yes
No
sometimes