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Evolution- The genetic change in a species over time. In order to better understand evolution you

Evolution- The genetic change in a species over time. In order to better understand evolution you need to understand the word species at a high school level. Species - A group of organisms that are similar that can breed and make offspring that make viable offspring (babies that when

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Evolution- The genetic change in a species over time. In order to better understand evolution you

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  1. Evolution- The genetic change in a species over time. In order to better understand evolution you need to understand the word species at a high school level. Species- A group of organisms that are similar that can breed and make offspring that make viable offspring (babies that when grown up can make babies)

  2. Charles Darwin – Father of the Theory of Evolution Through Natural Selection 1. More offspring are created than survive and reproduce. 3. There is a struggle to survive. (Competition) 1809-1882 2. There is variation among the offspring. (Due to sexual reproduction mutations & gene shuffling. Crossing over during meiosis) 4. The individuals that are best suited to the environment survive, reproduce and the future generations look like them. Adaptive radiation hand

  3. Natural Variation • Results in different phenotypes for a trait • Caused by genetic variety due to • Sexual reproduction • Mutation • Crossing over • Gene shuffling

  4. Yeti Crab

  5. Chapter 16 Darwin’s Voyage of Discovery Theory of Evolution through natural selection explains how modern organisms evolved through descent from common ancestors.

  6. White-faced Saki Money

  7. Sucker-footed Bat

  8. Star-nosed mole

  9. Pink Fairy Armadillo

  10. Komondor dog

  11. Blobfish

  12. Aye-aye

  13. Angora Rabbit

  14. Artificial Selection vs. Natural Selection Man chooses Nature chooses

  15. Evolutionary Fitness It is not the fastest or the strongest but those that are best adapted to the environment that survive.

  16. Teaching evolution makes some people uncomfortable….so…. Why teach it?

  17. Teaching evolution makes some people uncomfortable….so…. Why teach it? Evolution is here and you may have helped it happen.

  18. Evolution is here and you may have helped it happen.

  19. Evolution is here and you may have helped it happen. Youtube Extreamly Drug Resistant Tuburculosis XDR-VOA Story

  20. Embryology • Closely related organisms go through similar stages in their embryonic development. Chicken Human Mouse

  21. Human Embryo

  22. Early embryonic stages of all vertebrates are similar - a 4 week old human embryo has gill pouches and a tail, two trademarks of all vertebrate embryos, even ones that do not have gills or tails at birth.

  23. Evolutionary Biologist Homologous structures – structures that are similar in anatomy (structure) but different in function

  24. Forelimbs of mammals are constructed from the same skeletal elements - the ancestral forelimb became specialized for many different functions

  25. Homologous Stuctures

  26. DNA Comparisons

  27. History of Earth according to Hutton and Lyell 1780s - 1830s Hutton and Lyell’s Principles of Geology concluded that Earth is extremely old and that the processes that changed Earth in the past are still going on today.

  28. Paleogeologist

  29. Evidence for Evolution – The Fossil Record

  30. The breakup of Pangea

  31. Fossil Evidence from Pangea

  32. Strata

  33. Paleogeologist: Fossil Record

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