yes like when :
his father is AA RH- and his mother is OO RH- he will be AO RH- (A-). his father is AO RH- and his mother is OO RH- he may be:
AO RH- (A-) OO RH- (O-)
So, the most one is ( A-) ....
No, the expected blood types are only B and O.Yes they can because my mom has a- and my dad has a+ so yes you can have a difference in child and parents blood type but is it likely? No.