Genetics questions?

Question

All the children of a woman with curly hair and a man with straight hair have wavy hair. What type of inheritance is curly/straight/wavy hair?
A. codominance.
B. incomplete dominance.
C. epistasis.
D. polygenic inheritance.

If one of the wavy-haired children from the previous question has children with a wavy-haired spouse, what percentage of their children will have wavy hair?
A. 100%.
B. 75%.
C. 50%.
D. 25%.

Which blood type(s) is (are) possible among the offspring of a type A father and a type B mother?
A. types A and B.
B. types A, B, and AB.
C. type AB.
D. types A, B, O, and AB.

Which blood type is not possible among the offspring of a type AB father and a type A mother, whose father was type O?
A. type A.
B. type B.
C. type AB.
D. type O.

Answer 1

1. B
2. C
3. D (depending on their actual genotypes--the question doesn't really give you enough information to absolutely decide that)
4. D