1 / 23

Evolution

Monday April 4, 2011. Evolution. What is EVOLUTION?. “Evolution to dance”. True or False. Evolution has never been observed; it is simply a theory There is no sufficient evidence; gaps in fossil records disprove evolution Man is gradually evolving to be smarter

adrina
Télécharger la présentation

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. Monday April 4, 2011 Evolution

  2. What is EVOLUTION? • “Evolution to dance”

  3. True or False • Evolution has never been observed; it is simply a theory • There is no sufficient evidence; gaps in fossil records disprove evolution • Man is gradually evolving to be smarter • Human life evolved by random chance • Natural selection involves organisms trying to adapt

  4. True or False 1. Evolution has never been observed; it is just a ‘theory’

  5. FALSE • Prior to 1800 in the UK, most moths of a certain species had a light peppered pattern. • Dark colored or melanic moths were rare.

  6. During the 1800’s the Industrial Revolution, swept through the UK • The light-colored moth became rare and the dark morph became abundant. • In 1819, the first melanic (dark) form was seen; by 1886, it was far more common • Eventually light morphs were common in only a few locales, far from industrial areas.

  7. Why? • Soot from factories darkened the tree trunks of the surrounding forests • killed off light-coloured lichens.

  8. Light moths blend in with tree bark in non-polluted areas and dark moths blend in with bark in polluted regions • Moths that blend in are less likely to be eaten by birds.

  9. Conclusion

  10. TRUE • Evolution is based on lines of evidence, valid predictions, and have been tested in many ways

  11. 2. Gaps in the fossil records disprove evolution

  12. FALSE • Transitional Fossils ALL present? No, some transitional fossils are no preserved • Science actually predicts that for many evolutionary changes there will be gaps

  13. 2. Humankind is gradually evolving to be smarter

  14. FALSE • No ladder of progress • The future form of an organism is impossible to predict

  15. 4. The theory of evolution says that life originated, and evolution proceeds, by random chance

  16. FALSE • Random mutations vs. Natural selection Yellowfin Tuna – streamlined shape is no accident. A more streamlined shape allows the fish to move through the water faster.

  17. Basic Theory of Evolution

  18. 5. Natural selection involves organisms “trying to adapt”

  19. Natural selection leads to adaptation, but the process does not involve ‘trying’ • Either an individual has genes that a good enough to survive and reproduce or it does not

  20. Evolutionary Concepts • “Evolution is survival of the fittest” • Fitness: Who has greater fitness? Incredible Hulk Rush Limbaugh

  21. Evolutionary Concepts • (whoever has the most kids is the ‘most fit’) • Rush has 2 children • The Hulk has none

  22. Homework Look up and make jot notes on: • James Hutton • Jean-Baptiste Lamarack • Charles Darwin • Thomas Malthus • Charles Lyell Txtbook: pgs. 7-14 REMINDER: GATTACA Supported Opinion Paper Due: Thurs April 7, 2011 Turnitin.com: CLASS ID: 3949162 PASSWORD: thelee

More Related