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The Dance of Evolution

The Dance of Evolution. Evolution - the change in life over time; descent with modification. theories…theories…theories…. Lamarck - species evolve by keeping traits that their parents developed. Theory of Acquired Characteristics.

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The Dance of Evolution

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  1. The Dance of Evolution Evolution - the change in life over time; descent with modification theories…theories…theories… Lamarck - species evolve by keeping traits that their parents developed Theory of Acquired Characteristics Darwin - individuals with traits most favorable for a specific environment survive and pass those traits Theory of Natural Selection

  2. Adaptation - any inherited characteristic of an organism that helps it survive in its environment Camouflage - an adaptation that enables an organism to blend with it’s environment Mimicry– resemblance of one species to another Variation - the occurrence of an inherited trait that makes an individual different from other members of the same species Mutations- changes in an organism’s DNA

  3. Models of Evolution G…r….a……d….u….a…l...i….s….m - evolution is a slow gradual change Punctuated equilibrium-rapid evolution of a species resulting from gene mutation Evidence of Evolution fossil record - observed remains of once-living organisms vestigial structures - nonfunctional remains of organs that were functional in ancestral species homologous structuresBody parts in different organisms that have similar bones, muscles, blood vessels, nerves, embryological development, but do not necessarily serve the same function embryology - study of the development of the embryo genetics - study of DNA

  4. Give the numbers spotted versus not. Compare the appearances of the moths that were spotted with those that were not (originally). Explain how camouflage enables an organism to survive in its environment.

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