question_answer

A woman with Straight hair marries a man with curly hair who is known to be heterozygous for the trait. What is the chance that their first child will have curly hair?

A)  No chance      

B)  One in two

C)  It is certain      

D)  One in four

Correct Answer: B

Solution :

In humans, the trait curly hair (S+) is dominant over straight hair(s).