yes
# yes, if father is + - for RH and mother - - (negative) or + - (positive); the father can generate sons A, B, or AB depending by mother's group.
YES
yes, the mother could o negative
can an o positive and an o negative make an a positive baby
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
Yes.
no
yes
o positive
no
No