Genetic equilibrium is a:
Correct answer: D. Stability of allele and gene frequency in a population
- A. Change of allele and gene frequency in a population
- B. Stability of allele and gene quantity in a population
- C. Change of allele and gene number in a population
- D. Stability of allele and gene frequency in a population
Explanation
Genetic equilibrium refers to a condition where the allele and gene frequencies in a population remain constant over time, indicating no evolutionary change occurring. This stability is typically due to factors such as large population size, random mating, no mutation, migration, or selection. Option D is correct as it accurately defines this state of balance. The other options incorrectly describe scenarios where changes in allele frequencies or gene quantities occur, which are indicative of evolutionary processes rather than equilibrium.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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