Which of the following evolutionary processes directly reduces genetic variation within a population?
Answer
Genetic drift
The correct answer is Genetic drift — Conclude that genetic drift is the correct answer.
Step-by-step solution
- Identify processes that alter allele frequencies.
- Evaluate each process: mutation introduces new alleles, natural selection changes allele frequencies but can increase divergence, gene flow homogenises populations, genetic drift randomly changes frequencies reducing variation.
- Select the process that consistently reduces diversity in small populations.
- Conclude that genetic drift is the correct answer.
Common mistake: Confusing mutation with genetic drift
Concept tested: Genetic drift effect on diversity
Published · How this solution was prepared and checked
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