Suppose a population is carrying a condition controlled by two alleles: r (dominant) and r (recessive). if the frequency of the r allele is 15%, and the frequency of the r allele is 85%, what will be the frequency of the rr genotype, assuming evolution is not occurring? a. 72.25 percent b. 2.25 percent c. 12.75 percent d. 25.5 percent

A. 72.25 percent

Explanation:

The frequency of a genotype is calculated by the product of multiplying allele frequencies.

The R allele has a frequency of 85% (0.85), so for a homozyguous individual RR:

f(R) * f(R) = 0.85 * 0.85 = 0.7725

0.7725 * 100 = 77.25%

It is concluded that the frequency for RR genotype is 77.25%.

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