Question

Two dogs mate and have puppies. Both parent dogs are heterozygous for spotted fur. What is the probability of the puppies having solid-colored fur? (F is for the dominant allele for spotted fur, and f is the recessive for solid-colored fur.)

a) 25% solid-colored fur
b) 50% solid-colored fur
c) 75% solid-colored fur
d) 0% solid-colored fur

Answer 1

The probability of the puppies having solid-colored fur is 1 out of 3, or 33.33%.

Step-by-step explanation:

The probability of the puppies having solid-colored fur can be determined by using the Punnett square. Since both parent dogs are heterozygous for spotted fur, their genotypes would be Ff. When these genotypes are crossed, the possible genotypes of the puppies are FF, Ff, and ff. The genotype ff represents solid-colored fur. Out of the three possible genotypes, only one genotype (ff) represents solid-colored fur. Therefore, the probability of the puppies having solid-colored fur is 1 out of 3, or 33.33% which is not listed as an option. None of the given options accurately represent the probability.