Question

Question 1 of 20 : Select the best answer for the question. 1. 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. 2.25 percent B. 72.25 percent C. 12.75 percent D. 25.5 percent

Answer 1

Genotype frequency: RR is dominant, Rr is heterozygous and rr is recessive.

R^2+2Rr+r^2 = 1

R = 0.85

R^2= 0.85*0.85 = 0.7225