Which of the following does not affect genetic equilibrium/Hardy Weinberg Equilibrium?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Random mating
Option (1) Mutation — Affects it.
Option (2) Genetic drift — Affects it.
Option (3) Genetic recombination — Affects it.
Option (4) Random mating — Does not affect it. NCERT names gene migration, genetic drift, mutation, genetic recombination and natural selection as the five factors. Random mating is not among them.
Note: A similar question was also asked in CUET (UG) 2023 on 23-06-2023 (Slot 3).
NCERT Extract:
Hardy-Weinberg Principle – “… Five factors are known to affect Hardy-Weinberg equilibrium. These are gene migration or gene flow, genetic drift, mutation, genetic recombination and natural selection. When migration of a section of population to another place and population occurs, gene frequencies change in the original as well as in the new population.”