Penguins, which are birds, and seals, which are mammals, do not share a common ancestors, but both have flippers adapted for swimming. Which of the following best describes the flippers of penguins and seals?
Penguins and seals are a result of divergent evolution with vestigial structures.
Penguins and seals are a result of divergent evolution with homologous structures.
The flippers of penguins and seals are analogous structures with similar functions but different ancestors.
The flippers of penguins and seals are homologous structures with similar functions and ancestors.
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