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evoluton
| Question | Answer |
|---|---|
| Evolution | the process by which modern organisms have descended from ancient organisms |
| Charles Darwin | contributed lots to understanding of evolution. |
| Natural variation | differences among individuals of a species |
| Artificial selection | also called selective breeding. It occurs when humans select useful natural variations and produces organisms that look very different from their ancestors. |
| Adaptation | any inherited characteristic that increases an organism's chance of survival |
| Natural selection | survival of the fittest |
| Evidence for evolution | Found in the fossil record, geographic distribution of living species, homologous structures of organisms, and similarities in early development. |
| Fiches on Galapagos | descended w/ modification from a common ancestor |
| How are there similar but unrelated species? | They came from different ancestors but adapted similarly to their similar conditions. |
| Homologous structures | structures that have different mature froms but develop from the same ebryonic tissues |
| Vestigal organs | so reduced in size they are just vestiges, or traces, of homologous organs in other species |
| Darwin's Theory | Still upheld by research. There is variation in nature, more organisms are produced than can survive, there is a struggle for existance, species change over time. |
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numchuckskillz
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