AP_Bio_-_Chapter__22_evolution_history_natl_sel

AP_Bio_-_Chapter__22_evolution_history_natl_sel - Chapter...

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Chapter 22. Evolution by Natural Selection
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"Nothing in biology makes sense except in the light of evolution." -- Theodosius Dobzhansky March 1973 Geneticist, Columbia University (1900-1975)
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Essential Questions What have people believed about change in the past? What did Darwin say? What evidence supports Evolution by Natural Selection? What impact did Evolution have on biology?
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Carolus Linnaeus (1707-1778) Binomial classification system sought to discover order in the diversity of life "for the greater glory of God" implied no evolutionary link! taxonomy binomial nomenclature hierarchy of increasingly general categories KPCOFGS
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Gradualism James Hutton (1726-1797) Earth’s geologic features — profound change formed as product of slow but continuous & cumulative processes
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Lamarck Organisms were adapted to their environments adaptation is a result of adaptation is a result of change caused by change caused by environmental pressures environmental pressures organisms lost parts because they did not use them — organisms lost parts because they did not use them — like the missing eyes & digestive system of the like the missing eyes & digestive system of the tapeworm tapeworm the constant use of an organ leads that organ to the constant use of an organ leads that organ to increase in size — like the muscles of a blacksmith or increase in size — like the muscles of a blacksmith or the large ears of a night-flying bat the large ears of a night-flying bat evolution of acquired characteristics
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Uniformitarianism Charles Lyell (1797-1875) geologic processes have not changed throughout Earth’s history Conclusion : Earth must be much older than 6,000 years
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Charles Darwin 1809-1882 British naturalist Proposed the idea of evolution by natural selection Collected clear evidence to support his ideas
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AP_Bio_-_Chapter__22_evolution_history_natl_sel - Chapter...

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