Question

18. Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. If two heterozygous individuals with polka-dot tails mate, what's the probability of the phenotype and genotype combinations of the offspring?

Answer 1

Phenotypes: Polka-dot tail (75%), Solid tail (25%)

Genotypes: PP (25%), Pp (50%), and pp (25%)

The reason the phenotypes ratio is 3:1 (75% to 25%) is because PP and Pp result in polka-dot tails and only pp results in a solid tail.

I hope I was able to help. Best of luck.