Change in the frequency of alleles at a locus occurs by chance by the following phenomenon?
Correct answer: D. Genetic drift
- A. Mutation
- B. Selection
- C. Non-radom mating
- D. Genetic drift
Explanation
A change in the frequency of alleles at a locus occurs by chance is called genetic drift. This may occur in a small population when a few individuals fail to reproduce, and then genes are lost from the population.
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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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