Solutions For An Introduction to Genetic Analysis Chapter 18 Problem 15P

In a population, the three genotypes are A/A, A/a, a/a are present. The individuals with genotype A/a and A/A are equally fertile. If 0.1% of the population is a/a, and the A to a mutation rate is 10^{– 5}, the selection pressure against the a/a genotype would be calculated in the following way:

Substituting the values in the equation: