Evolution and Natural Selection

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Evolution and Natural Selection

Nature encourages no looseness, pardons no errors
- Ralph Waldo Emerson

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection.
- Charles Darwin, The Origin of Species


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In this lesson, we wish to ask:

  • How did observations in nature lead to the formulation of the theory of evolution?

  • What are the main points of Darwin's theory of evolution?

  • How does the process of natural selection work?

  • What evidence do we have for local adaptation?

  • How can natural selection affect the frequency of traits over successive generations?


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