Question

HELP 25 POINTS!!

The allele for a widow's peak has complete dominance over the allele for a straight hairline (w). What is the probability of two parents heterozygous for a widow's peak (Ww) having an offspring with a widow's peak?

Select one:

a. 75 percent

b. 50 percent

c. 0 percent

d. 25 percent

Answer 1

ratio by punnet square:

1 : 2 : 1

(WW : We : ww)

so the %age will be 25%

Answer 2

the correct answer is D. 25%