My question is in the description because it didn’t fit here. (?)

Question

The color for squirrel (Sciurus carolinensis) fur "F" is determined by two alleles. When two squirrels with

gray fur are crossed the following phenotypic ratios are present in the offspring:

a. 25% brown fur, 50% gray fur, 25% white fur. What are the genotypes of the parent gray

squirrels? b. 50% brown, 50% gray. What are the genotypes of the parent squirrels?

PLEASEE help I don’t understand punent squares, this is a incomplete dominance cross (monohybrid)

Answer 1

The genotype of the parent squirrels should be Ff. According to the phenotypes of the offspring, we can see that the gray phenotype of the parents is actually due to having two different copies of the allele F and f. Completing a punnett square with two gray parents, Ff x Ff would yield FF, Ff, Ff, and ff resulting in the given percentages (25% brown, 50% gray, and 25% white).