Which of the following increases genetic variation the most?
Correct answer: C. Crossing over
- A. Cloning
- B. Self-pollination
- C. Crossing over
- D. Asexual reproduction
Explanation
Crossing over produces new allele combinations during meiosis, greatly enhancing variation. Asexual methods do not increase 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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