natural selection
- Created by: Rebecca Large
- Created on: 30-04-13 18:04
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- Natural Selection
- Natural selection is the process that causes evolution.
- Living things show genetic variation-they're not all the same.
- The resources living things need to survive are limited so individuals must compete for the resources to survive.
- some of the varieties of species will have a better chance of survival with an increased chance of reproducing and passing on their genes. A greater proportion of individuals in next generation will have characteristics that help organisms to survive.
- Over many generations, the species become better and better able to survive. The "best" features are naturally selected and the species becomes more adapted to its environment.
- Selective breeding is humans deliberately choosing a feature they want to appear in the next generation and only breeding from those plants and animals who have it.
- Whereas natural selection only selects features that help survival, selective breeding may promote features that don't help survival.
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