Adaptive radiation is best illustrated by
Correct answer: C. Darwin's finches evolving different beak shapes from one ancestral species
- A. the two colour forms of the peppered moth
- B. the reduced human appendix
- C. Darwin's finches evolving different beak shapes from one ancestral species
- D. the similarity of cytochrome c in humans and chimpanzees
Explanation
Adaptive radiation is the spread of one ancestral species into many descendant species, each adapted to a different niche, which is exactly what happened when finches colonised the separate Galapagos islands. The peppered moth is a change in the frequency of two forms within a single species, not the origin of new ones. The appendix illustrates vestigial structures and cytochrome c illustrates molecular homology.
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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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