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Classification of Living Things

Classification of Living Things. Why Classify?. Scientific Names are dependable and universally accepted ! Felis concolor – mountain lion, puma, panther, cougar. Carolus Linnaeus – 1707-1778. Our system is based on his work. Heirarchical system – 7 levels.

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Classification of Living Things

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  1. Classification of Living Things

  2. Why Classify? Scientific Names are dependable and universally accepted! Felis concolor – mountain lion, puma, panther, cougar

  3. Carolus Linnaeus – 1707-1778 Our system is based on his work. Heirarchical system – 7 levels.

  4. Seven Levels of Classification

  5. Naming Organisms Genus species Called Binomial Nomenclature! Examples: Homo sapiens – Human Bubo Virginianus – Great Horned Owl

  6. Changes Over Time Linnaeus (1735) – 2 kingdoms – Animal and Vegetable Haeckel (1866) – 3 kingdoms – Protists, Plants, and Animals Chatton (1937) – 2 empires – Prokaryotes and Eukaryotes Copeland (1956) – 4 kingdoms – Monerans, Protists, Plants and Animals Whittaker (1969) – 5 kingdoms – Monerans, Protists, Fungi, Plants and Animals Woese, et. al. (1977) – 6 kingdoms – Eubacteria, Archaebacteria, Protists, Fungi, Plants and Animals Woese, et. al. (1990) – 3 domains – Bacteria, Archaea, Eukarya [edit]

  7. Complete classsification

  8. What characteristics are used? Similar structures Evolutionary relationships “Derived characters” – new characteristics that are evolutionary innovations Derived characteristics are used in cladograms.

  9. Cladogram

  10. Comparative Anatomy Turtle Human Horse Bird Bat Seal

  11. Human Coccyx and Monkey Tail

  12. Molecular Biology

  13. Comparative Embryology CHICK HUMAN

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