Principles of Evolution

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Siobhan
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146272
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Principles of Evolution
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2012-04-07 23:51:20
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Principles Evolution
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Principles of Evolution
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  1. Buffon
    thought species were created then evolved
  2. Hutton
    gradual geological change
  3. lamarck
    • mechanism of species change
    • use and disuse of body parts and the inheritance of acquired characteristics
    • The mechanisms he proposed are unsupported by evidence
    • Does correlate with the idea
    • of gradual change

    • Not correct
    • If a girrafe stretches neck and has a long neck, then its offspring would have an even longer neck in order to survive
  4. Cuvier
    • catastrophism
    • Paleontology, the study of fossils, was largely developed by French scientist Georges Cuvier
    • Cuvier advocated catastrophism, speculating that each boundary between strata represents a catastrophe
    • STRATA- layer in rock and soil that is due to volcano eruption.
    • Anything that survived was left to populate the earth
  5. smith
    sequense of fossils
  6. Lyell
    very old earth
  7. Darwin
    evolution, natural selection
  8. wallace
    evolution, natural selection
  9. Paleontology
    • Paleontology, the study of fossils, was largely developed by French scientist Georges Cuvier
    • Cuvier advocated catastrophism, speculating that each boundary between strata represents a catastrophe
    • STRATA- layer in rock and soil that is due to volcano eruption.
    • Anything that survived was left to populate the earth
  10. uniformitarianism
    • uniformitarianism (Lyell and Hutton): states that the mechanisms of change are constant over time- rivers flow and leave sediment and shape rocks ect
    • This view strongly influenced Darwins thinking- species can only evolve if there was a long time

  11. Descent with Modification
    • 5 year around the world voyage on the Beagle
    • observed and took notes on Gallopagos Islands on everything

    • Origen of Species
    • -Unity of life
    • -Diversity of life
    • -How it relates to Organisms and their environment

  12. The Voyage of the Beagle
    • collected specimens of South American plants and animals
    • observed that fossils resembled living species from the same region, and
    • living species resembled other species from nearby regions
    • During earthquake in Chile and observed the uplift of rocks- showed how long it took to make layers
    • was influenced by Lyells Principles of Geology and thought that the earth was more than 6000 years old


  13. Variation in a population of snails
    • Unity and diversity
    • Shape same but patterns different

  14. Evolution is supported by an overwhelming amount of scientific evidence
    • 1) direct observations
    • Resistant bacteria, cockroaches, embryology
    • 2) Homology
    • anatomical (arm bones); molecular (DNA)
    • 3) fossil record
    • different organisms at different times; whales evolved from land animals
    • 4) Biogeography
    • Pangaea, horses evolved on N. America

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