3) Tightly curled or wooly hair is caused by a dominant gene in humans. If a heterozyogus curly-haired person marries a person with straight hair, what fraction of their offspring would be expected to have straight hair? 
A) 1/2 straight 
B) 1/4 curly 
C) 100% straight 
D) 3/4 curly 
E) It is impossible to predict the outcome.