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Darwin and his Theory of Evolution

Darwin and his Theory of Evolution. Born in England, 1809  Studied Medicine at Edinburgh University Transferred to Cambridge University Studied to be a Minister. Darwin’s Background. Library of Congress, Prints and Photographs Division [reproduction number, e.g., LC-USZ61-104].

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Darwin and his Theory of Evolution

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  1. Darwin and his Theory of Evolution

  2. Born in England, 1809  • Studied Medicine at Edinburgh University • Transferred to Cambridge University • Studied to be a Minister Darwin’s Background Library of Congress, Prints and Photographs Division [reproduction number, e.g., LC-USZ61-104].

  3. Hired as Naturalist on H.M.S. Beagle • Sailed on Five Year Scientific Expedition • Down East Coast of South America • Up Pacific Coast to Galapagos Islands • Made Stops on Mainland and Islands • Observed Variety of Life and Habitats Darwin’s Expedition - 1831

  4. Outlined Theory in his Book in 1859: • On the Origin of Species by Means of Natural Selection • Published Other Works on Biology • Died in 1882 Darwin’s Work

  5. Proposed Evolution Resulting from Natural Selection: • Organisms Produce Many Offspring • Competition for Food, Territory, Mates, etc. • Those With Best Traits Survive • Organisms Change Over Many Generations • Time Frame: Millions of Years Summary of Origin of Species

  6. Characteristics of Organisms Coincide With Habitats • Changes Produced by Breeding of Organisms • Geologic Ages Suggested by Charles Lyell • Similarities of Various Organisms Darwin’s Support for His Theory

  7. Apparent Limits to Variation • No Mechanism For Sufficiently New Characteristics • Transitional Forms Would Require Special Environments • Oversimplified View of Living Cells • The Origin of Life Unexplained • Limitations of Fossil Record Limitations of Darwin’s Theory

  8. Chicago Daily News negatives collection, DN-0006585. Courtesy of the Chicago Historical Society. American Memory Collection • Sudden Appearance of Complex Life • Lack of Clear Transitional Forms • Gives More Evidence For Species Disappearance Limitations of the Fossil Record

  9. Sudden Appearance of Complex Life • Lack of Clear Transitional Forms • Gives More Evidence For Species Disappearance • Explanation of Strata Insufficient Limitations of the Fossil Record

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