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MHT CET Medical202625 April 2026Evening ShiftBiologyPrinciples of Inheritance and VariationActual

In a population with two alleles B and b with frequency 0.6 and 0.4 in Hardy-Weinberg equillibrium. How many heterozygous individuals in a sample of 250 can be expected?

Options

  1. A30
  2. B60
  3. C90
  4. D120

Correct answer

D. 120

Step-by-step solution

According to the Hardy-Weinberg principle, the frequency of alleles in a population is represented by p and q . Given the frequency of allele B is p = 0.6 and the frequency of allele b is q = 0.4 . The frequency of heterozygous individuals is given by 2pq . 2pq = 2 0.6 0.4 = 0.48 The expected number of heterozygous individuals in a sample of 250 is 2pq 250 . 0.48 250 = 120 Answer: 120

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