A Couple Has Three Children, Two of Which Have Blonde

Multiple Choice

A couple has three children, two of which have blonde hair. The third child and both parents have dark hair. What can be determined about the gene for hair color in this family?

A) Blonde hair color is an autosomal recessive trait.
B) Blonde hair color is an autosomal dominant trait.
C) Blonde hair color is a sex-linked dominant trait.
D) Blonde hair coloris a sex-linked recessive trait.
E) Blonde hair colorconveys a lethal mutation.