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15-1 Darwin’s Theory of Evolution

15-1 Darwin’s Theory of Evolution. Evolution = changes over time Theory = well-supported, testable explanation. Charles Darwin. Family of doctors. Darwin disliked medicine. Went to theological school to be a minister. Hired as companion to the captain of the Beagle.

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15-1 Darwin’s Theory of Evolution

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  1. 15-1 Darwin’s Theory of Evolution Evolution = changes over time Theory = well-supported, testable explanation

  2. Charles Darwin • Family of doctors. Darwin disliked medicine. • Went to theological school to be a minister. • Hired as companion to the captain of the Beagle. • 5 year trip. Darwin worked as a naturalist.

  3. Questions Darwin Asked Why are there no rabbits in Australia and no kangaroos in England? Observed dinosaur bones – why did they disappear? Had similar animals on different Galapagos Islands once been members of the same species?

  4. Darwin’s Observations • Diversity – • very different animals and plants • many more species than he ever thought • wide variety of ways to reproduce

  5. Darwin’s Observations • Fossils – • Resemble organisms alive today • Why did they disappear?

  6. Darwin’s Observations • Galapagos – • Different climates = different types of animals Hood Island Pinta Island Isabella Island

  7. Why are islands so good to study evolution?

  8. Why is evolution so important to study? • Predicts strains of flu for vaccine • Predicts AIDS & West Nile outbreaks • Human genome studies (Y chrom. disappearance) • Bacterial resistance to antibiotics and “super bugs” • Keep up with insecticides/herbicides for controlling pests and weeds (malaria) • Climate change threatens the existence of many species

  9. Assignment: Choose 1 organism and explain in detail how its characteristics and behavior help it survive in its particular environment.

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