Term
| Catastrophism was Cuvier's attempt to explain the existence of: |
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Definition
| Different species in the fossil record. |
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Term
| During drought years on the Galapagos, small, easily eaten seeds become rare, leaving mostly large, hard-cased seeds that only birds with large beaks can eat. if a drought persists for several years, what should one expect to result from natural selection? |
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Definition
| More small-beaked birds dying than larger-beaked birds. The offspring produced in subsequent generations have a higher percentage of birds with large beaks. |
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Term
| Which of Darwin's ideas had the strongest connection to Darwin having read Malthus's essay on human population growth? |
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Definition
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Term
| Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are best described as: |
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Definition
| Examples of convergent evolution. |
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Term
| Which of the following pieces of evidence most strongly supports the common origin of all life on Earth? |
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Definition
| All organisms use essentially the same genetic code. |
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Term
| Which scientist's ideas about natural selection best agree with Darwin? |
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Definition
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