Q170 / 180 · NEET 2026 (Re-NEET) · Zoology

A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele A is $0.1$, the frequency of AA is __________.

  • A
    $0.99$
  • Correct answer
    B
    $0.01$
  • C
    $0.02$
  • D
    $0.10$

Solution

According to the Hardy-Weinberg principle, the frequency of the homozygous genotype AA is given by $p^2$, where $p$ is the frequency of the allele A.

Given $p = 0.1$.

Frequency of AA $= p^2 = (0.1)^2 = 0.01$.

Answer: $0.01$

Hence, the correct answer is option: 'B'.

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