AP Biologymediummcq1 pt
A population is at Hardy–Weinberg equilibrium, and 9% of individuals show a recessive phenotype caused by genotype aa. What is the frequency q of the recessive allele?
A.0.09
B.0.03
C.0.30
D.0.91
Explanation
Core Concept
At Hardy–Weinberg equilibrium, the frequency of the homozygous recessive genotype is q². Because q²=0.09, q=0.30.
Correct Answer
C0.30
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