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Evidence for Evolution

Evidence for Evolution. By Diana L. Duckworth Rustburg High School Campbell County. Comparative Anatomy. Homologous Structures. Evidence of common ancestry – same groups of bones. http://encarta.msn.com/media_461553540_761554675_-1_1/analogous_and_homologous_structures.html.

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Evidence for Evolution

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  1. Evidence for Evolution By Diana L. Duckworth Rustburg High School Campbell County

  2. Comparative Anatomy Homologous Structures Evidence of common ancestry – same groups of bones. http://encarta.msn.com/media_461553540_761554675_-1_1/analogous_and_homologous_structures.html

  3. Vestigial StructuresHomologous bones or organs that are no longer functional Humans – cocyx (tail bone); appendix; ear muscles; wisdom teeth; body hair; eyebrows; eye lashes; tonsils http://www.iss.k12.nc.us/schools/shs/jmccartney/natsel.html

  4. Homologous Embryology Early development is same for many organisms; evidence of common ancestry. http://apbio12007.blogspot.com/2007/09/evidence-of-evolution-by-natural.html

  5. Fossil Evidence • Excellent lineages of • Horses • Pigs • Whales • Two types of patterns visible: • Gradualism – directional selection produces gradual change over long time period • Punctuated Equilibrium – rapid evolution in short bursts separated by long periods of stasis • Rapid evolution – directional or disruptive selection • Stasis – stabilizing selection

  6. Horse evolution Whale evolution http://evolution.berkeley.edu/evosite/evo101/VIIAPaceevolution.shtml http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/evolution/evolutionrev4.shtml

  7. From one Class to Another Mammal, adapted for chewing & tearing Mammal-like reptile http://mgonline.com/iguana.html Note differences in body position Reptile, adapted for gulping http://www.talkorigins.org/faqs/comdesc/section1.html http://bookingnwguides.com/BigGame/canada/lynxhuntingguidescanada.htm

  8. From a reptilian skull to a mammal-like reptile to a mammalian skull; well documented transitions in fossil record. http://www.bringyou.to/apologetics/p15.htm

  9. Mammal-like reptiles;body Type – reptile; skull mammalian Internal structure of bones indicative of endothermy – warm blooded. http://faculty.plattsburgh.edu/thomas.wolosz/pre-dino.htm

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