Zoology-Natural Selection
NEET Zoology Natural Selection MCQ Question
Type: MCQ-numerical-Medium-Class 12
In a population of beetles, the allele frequency for a dominant allele A is 0.7. According to Hardy-Weinberg equilibrium, what is the expected frequency of heterozygous individuals (Aa) in this population?
A
0.21
B
0.42
C
0.49
D
0.09
Correct Answer
Option B
Detailed Explanation
According to Hardy-Weinberg equilibrium, the frequency of heterozygous individuals (Aa) is given by 2pq. If p = 0.7, then q = 1 - 0.7 = 0.3. Thus, 2pq = 2 * 0.7 * 0.3 = 0.42.
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