In a population in Hardy-Weinberg equilibrium, 1 percent of individuals show a recessive trait. What is the frequency of heterozygous carriers?
Answer and explanation
Correct answer: D. 0.18
- Step 1: , so and .
- Step 2: Carriers .
Answer
0.18.
Why not the others: 0.10: this is the frequency of the recessive allele. 0.20: the carrier frequency is 2pq, not 2q. 0.81: this is the frequency of the homozygous dominant genotype.
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