Chapter_22_Learning_Objectives - Chapter Learning...

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Chapter Learning Objectives Chapter 22: Descent with Modification: a Darwinian View of Life Define evolution and adaptation. a. Change over time of a genetic change in population NOT species! b. Adaptation – accumulation of inherited characteristics (highlighted blonde hair, muscles) that enhance organisms ability to survive in an environment i. Moles over time have inherited (natural selection) big claws good for digging gives them a better suited environment to live underground Concept 22.1: The Darwinian revolution challenged traditional views of a young Earth inhabited by unchanging species Describe the theories of catastrophism, gradualism, and uniformitarianism. a. Catastrophism - The hypothesis that a series of immense, brief, worldwide upheavals changed the Earth's crust greatly and can account for the development of mountains, valleys, and other features of the Earth. b. Uniformitarianism - The scientific principle that natural processes operated in the past in the same way that they operate today c. Gradualism – slow, gradual evolutionary change Explain the mechanism for evolutionary change proposed by Jean- Baptiste de Lamarck a. Prior to Darwin’s theory…bodies of living organisms are modified
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This note was uploaded on 02/26/2009 for the course BIOL 1202 taught by Professor Gregg during the Spring '08 term at LSU.

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Chapter_22_Learning_Objectives - Chapter Learning...

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