Answer:
A - 1/4
B - 1/2
C- 1/8
Step-by-step explanation:
The complete question is
Diane has type A blood and Darryl has type B. They have a son Duane with type A blood and a daughter, Dora, with type B blood. If they have another child, what are the chances that it
A. Will have type AB blood?
B. Will be a girl?
C. Will be a boy with type O blood?
A.
Let the genotype of Diane be AO
Daryl can have genotype BO
AO * BO
AB, AO, BO, OO
Probability of having AB blood group is 1/4
B.
1/2
C
1/2 * 1/4 = 1/8