The different beak shapes of Darwin's finches on the Galapagos Islands reflect
Correct answer: A. adaptation to different food sources
- A. adaptation to different food sources
- B. random accidents with no cause
- C. differences in the age of the birds
- D. infection by different parasites
Explanation
Seed crackers, insect pickers and cactus feeders each carry a beak matched to their food, descendants of one ancestor that radiated into vacant niches. The pattern shows natural selection shaping a structure to its use.
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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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