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02 evidence of evolution embryology


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02 evidence of evolution embryology

  1. 1. Evidence of Evolution: Comparative Embryology
  2. 2. Comparative Embryology
  3. 3. Comparative Embryology Closely related species have similar embryological development. Structures appear in the embryonic stages that serve no purpose and are not present in the adult.
  4. 4. Comparative Embryology Example: Vertebrate Embryos •All have gills which eventually become ear canals •All have tails/tailbones. •All pass stages which represent larval fish.
  5. 5. Comparative Embryology
  6. 6. How is Comparative Embryology Evidence of Evolution?