3) I am blood group A and my wife is AB. Our three daughters are AB blood groups. What can I do to know my genotype? Hide all true possibilities (more than one answer possible)
a) Check my parents' blood type. If one of my parents is 0 or B, I will know that I am heterozygous
b) Have other children. After ten A and/or AB children, there will be less than 0.1% chance that I will be heterozygous. I will therefore be fairly convinced that I am homozygous dominant
c) Have other children. If I have a group B child, I will know that I am heterozygous
d) Nothing, I can already know that I am homozygous dominant
e) Check the blood type of my parents and my brothers and sisters If my parents, my brother and my three sisters are blood type A, I will definitely be homozygous dominant