Problem: Suppose that a mutation generates a recessive allele, f, which causes ff cheetahs to run faster than either Ff or FF cheetahs, which means they catch more prey, on average. Will the frequency of the f allele change over time by directional selection? Responses It can't be determined without knowing if f also affects other components of fitness. It can't be determined without knowing if f also affects other components of fitness. Based on this information, we know that f is disfavored by directional selection and will tend to go to extinction. Based on this information, we know that f is disfavored by directional selection and will tend to go to extinction. Based on this information, we know that f is favored by directional selection and will tend to go to fixation. Need Assignment Help?