Blood types:
AB +
AB -
A +
A -
B +
B -
O +
O -
It is possible to have a child with O blood despite the parents having different blood types.
While the man tested for B blood, he could have been a combination between type o and B whereas, the woman was a combination of type A and o. Since A/B are dominant, they would 'stand out' contrarily to o.
This means that their children could have AB or O blood.
The answer would be Dopamine
10 is 4
11 is 3
15 is 3 (where it says 3 ok)
The genotypic ratio of their offspring is 100% Ee.
Hope this helps! God bless
-vf
