In humans, a widow's peak is caused by a dominant allele W, and a continuous hairline is caused by a recessive allele w. Short fingers are caused by a dominant allele S, and long fingers are caused by a recessive allele s. Suppose a woman with a continuous hairline and short fingers and a man with a widow's peak and long fingers have three children. One child has short fingers and a widow's peak, one has long fingers and a widow's peak, and one has long fingers and a continuous hairline. What are the genotypes of the parents?
A) Female wwSS; male WWss
B) Female wwSs; male Wwss
C) Female wwSs; male WWss
D) Female WwSs; male WwSs
E) None of the above

Question

Quizplus · Accepted Answer

The woman must be ww for a continuous hairline and Ss for short fingers. The man must be Ww for a widow's peak and ss for long fingers. This combination can produce the observed offspring phenotypes.

In Humans, a Widow's Peak Is Caused by a Dominant