Chapter 22

Chapter 22 - Chapter 22 Descent with Modification Evolution...

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Chapter 22- Descent with Modification - Evolution o Evolution: The change over time of the genetic composition of populations o Natural Selection Populations of organisms can change over the generations if individuals having certain heritable traits leave more offspring then others [ differential reproductive success] Genes mutation new species o Evolutionary adaptations A prevalence of inherited characteristics that enhance organisms’ survival and reproduction Increase fitness= high adaptability - Evolutionary History o Linnaeus: taxonomy o Hutton: gradualism Was a geologist Earth was gradually formed and it was a million of years old o Lamarck: evolution Theory of use or disuse Inheritance of acquired traits Figured out change Was wrong o Malthus: Populations The human population will out grow supplies it needs Economics o Covier: paleontology; catastrophism Help to categorize Darwin’s fossils o Lyell: uniformitarianism
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This note was uploaded on 10/31/2011 for the course BIO 102 taught by Professor Robinson during the Spring '09 term at UPenn.

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Chapter 22 - Chapter 22 Descent with Modification Evolution...

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