1 / 26

Topic 2

Topic 2. The Evidence for Evolution. “ What do these patterns, rules and trends reveal?” E.O. Wilson. I. Artificial Selection (animal & plant breeding). Brassica. - # eggs/hen - Cow milk production - Crop yields. Illinois Corn Oil Experiment. started in 1896 90 + generations.

denim
Download Presentation

Topic 2

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. Topic 2 The Evidence for Evolution “What do these patterns, rules and trends reveal?” E.O. Wilson

  2. I. Artificial Selection(animal & plant breeding)

  3. Brassica - # eggs/hen - Cow milk production - Crop yields

  4. Illinois Corn Oil Experiment started in 1896 90 + generations

  5. II. Natural Selection in the Wild

  6. Industrial melanism

  7. Pesticide Resistance

  8. Evolving Pathogens

  9. III. Similarities in Appearance Among Species Comparative anatomy

  10. 1) Homologous Structures Shared ancestry, different function a) Five digit tetrapod limb

  11. "What could be more curious than the hand of a man formed for grasping, that of a mole for digging, the leg of a horse, the paddle of a porpoise and the wing of a bat, should all be constructed on the same pattern and should include similar bones and in the same relative positions?" Darwin

  12. b) The Genetic Code “Frozen accident”

  13. 2) Analogous Structures Different ancestry, same function a) Body shape in marine organisms Result of convergent evolution

  14. b) Flower color and shape (pollination syndromes)

  15. Convergent Evolution: The Comparative Method

  16. 3) Embryological Development

  17. 4) Comparative Biochemistry

  18. 0 56 15 Cytochrome Crespiration protein 104 amino acids # differences in a.a. sequence between humans and

  19. Darwin concluded...

  20. IV. Vestigial Organs

  21. The vanishing pelvis…

  22. Human Vestigial Organs

  23. V. Fossil Sequence

  24. “I’d give up evolution if a rabbit fossil was found in the Precambrian.” JBS Haldane

More Related