If the frequency of two alleles in a gene pool is 90% A and 10% a, what is the frequency of individuals with genotype Aa in a population in Hardy-Weinberg equilibrium?

If the frequency of two alleles in a gene pool is 90% A and 10% a, what is the frequency of individuals with genotype Aa in a population in Hardy-Weinberg equilibrium? 



A. 0.81

B. 0.09

C. 0.18

D. 0.01

E. 0.198



Answer: C


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