Which feature of natural populations provides the raw material for evolution?
Correct answer: B. Heritable variation among individuals
- A. All individuals being genetically identical
- B. Heritable variation among individuals
- C. The absence of competition
- D. Unlimited food supply
Explanation
Without heritable differences there is nothing for selection to choose between, so variation produced by mutation and recombination is the essential fuel. Identical populations, however large, cannot evolve.
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About Concept of Evolution
Evolution is the heritable change in populations over generations, driven by mutation, recombination, natural selection, genetic drift and reproductive isolation. Questions examine variation, adaptation, survival and reproduction, speciation, fossil and anatomical evidence, and the difference between individual acclimatization and evolutionary change in a population.
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