Widow's peak, a pointed hairline on the forehead, is a genetic trait caused by a dominant allele. It can be traced back through a family's history using pedigree analysis.
The pedigree shown here is of three generations of a family. Notice that some individuals (shown in gray)have a widow's peak (W = dominant allele and w = recessive allele).
-Mary has the genotype ________.
A)WW
B)ww
C)Ww

Question

Widow's peak, a pointed hairline on the forehead, is a genetic trait caused by a dominant allele. It can be traced back through a family's history using pedigree analysis.
The pedigree shown here is of three generations of a family. Notice that some individuals (shown in gray)have a widow's peak (W = dominant allele and w = recessive allele). 
-Mary has the genotype ________.
A)WW 
B)ww 
C)Ww

Quizplus · Accepted Answer

The genotype "Ww" indicates that Mary has one dominant allele (W) and one recessive allele (w), which is a common way to represent heterozygosity in genetics.

Widow's Peak, a Pointed Hairline on the Forehead, Is a Genetic