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Chap. 13- Evolution
| Term | Definition |
|---|---|
| population | all of the individuals of a species that live in a specific geographical area and can breed |
| natural selection | In a particular environment, some individuals of a population or species are better suited to survive and have more offspring (differential rates of reproduction) |
| adaptation | an inherited trait that has become common in a population because the trait provides a selective advantage |
| reproductive isolation | the condition in which two populations of the same species do not breed with one another because of geographical separation, difference in mating periods or other barriers |
| Charles Darwin | published evidence that species evolved, and explained how evolution occurs |
| Galapagos Islands | islands off the South American coast where Darwin first observed evolution |
| Theory of evolution | 1. Inherited variation exists within the genes of a population 2. Natural selection 3. Those traits tend to spread in that population 4. There is evidence from fossils that living species evolved from organisms that are extinct |
| paleontologist | scientists who study fossils |
| speciation | the process by which a new species is formed |
| evolution | change over time |
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