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9 Cards in this Set
- Front
- Back
comparative anatomy
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the comparison of the structures of different organisms
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homologous structure
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similar structures that related species have inherited from a common ancestor
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mold
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hollow area in sediment in the shape of an organism or part of an organism
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cast
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solid copy of the shape of an organism
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petrified fossil
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fossils in which minerals replace all or part of an organism
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trace fossil
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a type of fossil that provides evidence of the activities of ancient organism
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paleontologist
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scientist who studies fossils
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gradualism
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proposes that evolution occurs slowly but steadily
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punctuated equilibria
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the theory that species evolve during short periods of rapid change
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