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The tendency of population to remain in genetic equilibrium may be disturbed by

  • A.Lack of mutations
  • B.Lack of random mating
  • C.Lack of migration
  • D.Lack of genetic drift

Answer: B

Genetic equilibrium is disturbed by a lack of random mating.

The Hardy-Weinberg principle holds only if mating is random and there is no mutation, migration, selection or genetic drift. Assortative mating or inbreeding changes the genotype frequencies at once, even where the allele frequencies stay the same.

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