The severe reduction in population size due to disasters is called:
Correct answer: D. Bottleneck
- A. Genetic drift
- B. Outbreeding
- C. Inbreeding
- D. Bottleneck
Explanation
A bottleneck effect occurs when a large population is suddenly reduced, leading to loss of genetic variation.
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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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