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science7ch7
| Question | Answer |
|---|---|
| Trait | a distinguishing quality that can be passed from one generation to another |
| Selective breeding | the breeding of organisms that have a certain desired trait |
| Mutation | a change in the order of the bases in an organism's DNA (3 types: deletion, insertion, substitution |
| Natural selection | The process by which organisms with favorable traits survive and reproduce at a higher rate than organisms without the favorable trait |
| Adaptation | A characteristic that helps an organism survive in its environment |
| Evolution | The process by which populations accumulate inherited changes over time |
| Fossils | Solid remains or imprints of a once living organism - they are often preserved in rock |
| Separation (speciation) | Two populations become isolated from each other |
| Adapation (speciation) | If the population that is isolated either changes or dies |
| Division (speciation) | The separated populations no longer are the same species. |
| Overproduction | The ability of a species to produce far more offspring than can possibly survive |
| Genetic variation | Each individual has unique combination of traits |
| Struggle to survive | Due to limited resources only some individuals survive to adulthood |
| Successful reproduction | Individuals that are well adapted to the environment and have better traits will be able to reproduce and survive |
| Charles Darwin | Developed an explanation for evolution called natural selection |
| Vestigial structures | Remains of structures in an individual that were once useful but are no longer useful to the individual |
Created by:
whitet
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