4_EvolutionDebate - The Case For and Against Evolution Ch...

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The Case For and Against Evolution Ch. 22.3 + R1 (on Blackboard) "Both sides ought to be properly taught . . . so people can understand what the debate is about…” George Bush, 2005
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4 “Nothing in biology makes sense except In the light of evolution -Theodosius Dobzhansky, 1973 BISC 120
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5 Arguments against evolution
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6 Argument: Evolution cannot be observed and therefore cannot be proved
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7 Rebuttal: Evolution is observed all the time!
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8
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9 Rebuttal cont’d: We cannot observe the entirety of evolution and therefore rely on diverse lines of evidence, just as we do in other fields of science
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10 Argument: There are no transitional fossils
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11 “…Why, if species have descended from other species by fine gradations, do we not everywhere see innumerable transitional forms?” -from The Origin chapter entitled Difficulties on Theory
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12 Rebuttal: The fossil record is spotty, but there are transitional forms Ex)Transition between fish and amphibians Acanthostega
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13 Ex) Transition between bird and reptile Archeopteryx
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Ex) Transitions between horse species
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15 Ex) Transition from terrestrial ancestor to whale
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16 Argument: Chance cannot create complexity
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18 Rebuttal: Mutations are random (mostly). Selection is not.
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19 Argument: The first step toward complex adaptations could not have been favored
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20 To suppose that the eye, with all its inimitable contrivances for adjusting the focus to different distances, for admitting different
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  • Fall '06
  • 11:00-01:50pm
  • Evolution, chromatic aberration, highest possible degree

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