1 / 27

Chapter 13 Theory of Evolution

Chapter 13 Theory of Evolution . I. Charles Darwin – p. 276 A. WHO? British naturalist WHAT? 5 year voyage on the Beagle from England around the world WHERE? South America (Galapagos Islands) WHY? Study variation in life forms .

kumiko
Download Presentation

Chapter 13 Theory of Evolution

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 13 Theory of Evolution

  2. I. Charles Darwin – p. 276 A. WHO? British naturalist WHAT? 5 year voyage on the Beagle from England around the world WHERE? South America (Galapagos Islands) WHY? Study variation in life forms

  3. B. In the 1800’s, most people believed that each species was a divine creation that exists unchanging.

  4. C. Darwin had a different view 1. He published his theory in a book in the year 1859 . On The Origin of Species by Means of Natural Selection “descent with modification”

  5. 2. Evolution by natural selection • Evolution - • Natural selection -

  6. D. Influences on Darwin’s ideas • 1. Lamarck • Use or disuse - • Inheritance of acquired traits -

  7. II. Darwin’s proposed ideas– p. 280 A. Inherited variation exists within the genes of every population or species as the result of random mutations and translation errors.

  8. B. In a particular environment, some individuals of a populations or species are better suited to survive and have more offspring.

  9. C. Over time, the traits that make certain individuals of a population able to survive and reproduce tend to spread in that population.

  10. D. Habitats present different opportunities and challenges for survival and reproduction – “survival of the fittest”

  11. E. Each species has evolved and accumulated adaptationswhich increase chances of survival – p. 279 Video clip examples of adaptations: 1. Blue footed boobie- 2. Marine Iguana- 3. Red eye gull- 4. Hawk fish-

  12. Changes in populations may occur through mutations that allow: • 1. speciation – • 2. reproductive isolation – • Ex: Grand Canyon squirrels- III. Evolution in the Modern World – p. 281

  13. Discovery of new species:

  14. B.Tempo of evolution – p. 282 1. gradualism – 2. punctuated equilibrium-

  15. C. The Fossil record p. 283 1. Earth is 4.5 billion years old

  16. D. Anatomy and development – p. 286 1. vestigial structures – EX: wings of flightless birds

  17. 2.homologous structures– EX: vertebrate forelimb bone structure

  18. 3. embryonic development -

  19. E. Biological molecules – p. 287 EX: hemoglobin amino acids

  20. IV. Evolution in action in today’s world – p. 288

  21. A. Antibiotic resistant bacteria – p. 289

  22. B. Insect resistance

  23. C. Subspecies – p. 291 EX:

More Related