The random change in allele frequencies is known as what?
Correct answer: A. Genetic drift
- A. Genetic drift
- B. Diversity
- C. Linkage
- D. All of these
Explanation
Genetic drift is the correct answer, as it describes the random changes in allele frequencies that occur in a population due to chance events, more significantly impacting smaller populations.Diversity is incorrect, as it refers to the variety of genes and alleles within a population. Linkage is also incorrect, as it involves genes that are inherited together due to their physical proximity on a chromosome, not due to random changes. All of these are incorrect because genetic drift is the only option that involves randomness in allele frequency changes.
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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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