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Evolution Study guid
Mrs. Buckley Science
| Question | Answer |
|---|---|
| Charles Darwin: Who was he and what did he do? | A scientist who came up with the idea of evolution by natural selection |
| Adaptations + Examples | The tortoises and finches were noticibly different on different islands. They had different shells and beaks depending on the environment |
| Evolution + examples | Darwin thought that species gradually changed over time like giraffe necks. It makes the species better adapted to new conditions |
| Natural selection + examples | Makes certain individuals better adapted to their environment like finches from a rain forest versus a forest |
| Overproduction + examples | Most species produce far more offspring than can possibly survive like lions |
| Competition + examples | Since food and other resources are very limited the offspring has to compete to get food |
| Variations + examples | Indivdual members of a species differ from one another in their individual traits. For example some turtles will swim faster than others. |
| Survival of the fittest | Some variations allow individuals in a species to survive more easily than others. For example "fast swimming" turtles will survive more easily when first hatched than the slower swimming turtles |
| How a new species forms | When a group of individuals remains separated from the rest of the group long enough to evolve different traits to survive in a different environment |
| Fossils as evidence | Scientists use many different methods other than DNA to prove evolution , fossils as clues for evolution |
| Homologous structures + examples | similar bone structure are evidence to a common ancestor, similar structures in organisms but used for different purpose depending on the environment they are in . Suggests a common ancestor |
| Similarities in embryos | common ancestors |
| Similarities in DNA | species inherits genes from common ancestor |
| Branching trees | a diagram that shows how scientist think different groups of organisms are related |
| Explain what happened in Bird Buffet in terms of Darwin's theory and Darwin's finches | nspired by observations of finches on the Galapagos Islands, Charles Darwin came up with an idea that is perhaps the most influential idea in all of science - natural selection. |
Created by:
missmee03
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