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13 Cards in this Set
- Front
- Back
Biological Evolution |
Change in the characteristics of a population of organisms that occurs over the course of generations |
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Natural Selection |
The differential survival and reproduction of individuals in a population |
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Microevolution |
Changes that occur within a species and the characteristics of a population. Easily observed, relatively non-controversial. |
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Macroevolution |
Changes that occur, as a result of microevolution, over long periods of time and result in the origin of new species. Controversial among non-biologists. |
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Anaximander |
Greek philosopher who suggested that humans evolved from fish that had moved onto land |
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Lamarck |
Published ideas about inheritance of acquired traits in 1809 |
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Biological Classification |
Implies common ancestry |
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Anatomical similarities between organisms |
Mammalian forelimbs have the same set of bones. The underlying structure is similar despite the very different functions |
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Useless traits in modern species. |
Vestigial, but similar, structures in ferns and flowering plants |
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Shared developmental pathways. |
Similarity among chordate embryos |
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DNA similarities |
Birds in same genus have DNA that is more similar to one another, while distantly-classified birds have DNA that is less similar. |
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Distribution of organisms on earth |
Different species of mockingbird found on Galapagos all resemble another species found on the mainland |
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Fossil evidence |
Horse fossils provide a good sequence of evolutionary change within a lineage |