Evolution is best defined as
Correct answer: A. gradual genetic change in populations over successive generations
- A. gradual genetic change in populations over successive generations
- B. the growth of an individual from birth to adulthood
- C. the seasonal migration of animals
- D. the extinction of a single species
Explanation
Evolution acts on populations across generations, changing allele frequencies over time. An individual's own growth or a single extinction event is not evolution, since neither involves inherited change passed through a population.
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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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