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Evolution Elaine
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Evolution Elaine

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  • 1. _elaine’s_ Reminders
    • Do not use the enter key you might not see some effects. Use the mouse if possible.
    • There are videos in this presentation. Once you see a blank slide please wait and you’ll see some animations.
    • Click the topics you want to view.
    • Thank You
  • 2.  
  • 3. Contents
          • Definition of Evolution
          • Mechanisms of Evolution
          • Evidences of Evolution
  • 4.
    • – the change in a living population over time.
    Evolution
  • 5. Modern Theory of Evolution Religion vs Science Early Concepts Lamarck's Concept
  • 6.
    • Special Creation Theory
    • vs
    • The Theory of Evolution
  • 7. Special Creation Theory
    • All species were made by a supreme being during creation and that they have changed little since then .
  • 8. Theory of Evolution
    • Evolutionists maintain that present-day species have developed from simpler, more primitive organisms that existed millions of years ago.
  • 9. Early Concepts of Evolution
  • 10. Aristotle The nature evolved gradually from the simple to the more complex and from the imperfect to the perfect
  • 11. LUCRETIUS
    • He wrote an evolutionary explanation of the origin of plants and animals.
  • 12. Leonardo da Vinci
    • THEORY OF CATASTROPHISM
    The fossil found in the rocks resulted from a succession of fires and flood
  • 13. James Hutton
    • sedimentary deposits was due to geological forces of erosion
  • 14. Charles Lyell
  • 15. Lamarck's Concept of Evolution
    • He believed that once organisms have become adapted to their environment, the traits that they have acquired are transmitted to the next generation.
  • 16.  
  • 17. Charles Darwin
    • Father of the Modern Theory of Evolution proposed that evolution is brought about by natural selection.
  • 18.
    • Natural selection is the process by which organisms with traits suited to an environment, or favorable traits, have a better chance of surviving and reproducing than those that are not suited.
  • 19. It is the struggle for existence and the survival of the fittest
  • 20. Evidences of Evolution Fossils DNA Coding Comparisons
  • 21.
    • (from Latin fossus , literally "having been dug up")
    • - are the preserved remains
    • that had lived in the past.
    Fossils
  • 22.  
  • 23.
    • Three small ammonite fossils, each approximately 1.5 cm across.
  • 24.
    • Petrified wood . The internal structure of the tree and bark are maintained in the permineralization process.
  • 25.
    • Eocene fossil fish Priscacara liops from Green Riv e r Formation of Utah
  • 26.  
  • 27. DNA Coding
    • To determine whether the species have evolved from a common ancestor, it is logical to look for similarities among the species
  • 28. Comparative anatomy is the study of similarities and differences in the anatomy of organisms.
    • .
  • 29.  
  • 30.
    • Comparative biochemistry or biochemical evolution is the study of differences in chemical (metabolic) processes among species . For example, the difference between carnivorous species of animals and herbivores is included in comparative biochemistry.
  • 31. Comparative Embryology
  • 32.