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Convergent evolution is illustrated by

1. dogfish and whale
2. rat and dog
3. bacterium and protozoan
4. starfish and cuttle fish

Correct answer: dogfish and whale

Solution

Dogfish and whale both have streamlined bodies and fins/flippers suited for swimming, but they belong to very different groups. Their similarity is due to convergent evolution, where unrelated organisms independently evolve similar traits under similar environmental pressures.

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