Biolog 17 - Chapter 17: Evidence of Evolution I....

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Chapter 17: Evidence of Evolution I. Evolutionary Beliefs A. Species were all linked as scientists identified patterns in the environment B. Biogeography was studied for patterns of geographic distribution of species in communities C. Comparative morphology studies similar structures on different organisms II. Theories A. Catastrophism was the view that there were no new species but only one time creation but catastrophes happened and survivors just repopulated the earth. B. Lamarck’s view was that offspring acquired traits that their parents acquired in the lifetime. C. The Theory of Uniformity dictated that repetitive change shaped earth III. Darwin, Wallace, and Natural Selection A. Darwin’s theory of Natural Selection Outcome of differences in reproduction that vary in shared traits An increased fitness to the environment is measured by genetic contribution of a trait to future generations B. Fossils Evidence of fossilization or traces of organisms being covered by sediments
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This note was uploaded on 12/03/2011 for the course CHEM BIO P 101 taught by Professor Kk during the Spring '11 term at Rochester.

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Biolog 17 - Chapter 17: Evidence of Evolution I....

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