In dogs, wire hair (H) is dominant to smooth (h). A dog that has smooth hair is crossed with a dog that is heterozygous for wired-hair. What percentage of the offspring are expected to have smooth hair?

Question

A. 0%
B. 25%
C. 50%
D. 100%

Answer 1

B. 25%

The genotype of the dog that is heterozygous for wired-hair is Hh. When crossed with a dog that has smooth hair (hh), the Punnett square would be:

H h
H Hh Hh
h Hh Hh

Therefore, 25% of the offspring are expected to have smooth hair.