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Classification

Classification. Classification. A system of labeling and grouping Taxonomy is the practice of classifying. How do we classify in every day life?. Movies: Horror, action, comedy, drama Music: Rap, rock, pop, country, electronica. Why classify?.

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Classification

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  1. Classification

  2. Classification • Asystem of labeling and grouping • Taxonomy is the practice of classifying

  3. How do we classify in every day life? • Movies: Horror, action, comedy, drama • Music: Rap, rock, pop, country, electronica

  4. Why classify? • Classification adds order and helps us make sense of the world • Classification also tells us how closely related organisms are

  5. Linnaeus • Carolus Linnaeus proposed a system where organisms would be classified in hierarchical groups

  6. Domain • Kingdom • Phyla • Class • Order • Family • Genus • Species

  7. Movie • Live Action • Horror • Supernatural horror • Found Footage • Paranormal Activity • Paranormal Activity 4 • Domain • Kingdom • Phyla • Class • Order • Family • Genus • Species

  8. Dear King Phillip Come Over For Good Spaghetti

  9. Example: Human • Domain: Eukaryotes • Kingdom: Animal • Phylum: Chordate (has a backbone) • Class: Mammal • Order: Primate • Family: Hominid • Genus: Homo • Species: Homo sapiens

  10. Scientific names • Comprised of the genus and species • Human = Homo sapiens • Wolf = Canis lupus • Rose = Rosa rosa • First word capitalized, second word lowercase

  11. Language barriers • In the United States the term “buzzard” applies only to vultures • In the United Kingdom, “Buzzard” can mean a hawk. • But Coragypsatratus refers to the American black vulture everywhere

  12. Phylogenetic Trees/Cladograms • Visual representations of how organisms are related • Similar to family trees/pedigrees • Also called the“Tree of Life”

  13. Nodes Branches

  14. Nodes = Places where speciation occurred, common ancestors • Branches = Individual species

  15. Groups next to each other are called sister groups • Humans and armadillos are sister groups in this diagram

  16. Horizontal lines show shared derived characteristics

  17. Assignment: Dichotomous key

  18. 1. Pick 10 aliens and identify them with the dichotomous key. Write this down next to the alien or on a separate paper (identify which aliens you are doing!) • 2. Create a dichotomous key for the second set of 10 aliens. Group them based on shared characteristics.

  19. How to create the key • Find a characteristic that separates the aliens into two groups. Ex: Do the organisms have hair? • Set up a question: • 1) a. The organism has hair Go to 2 • b. The organism does not have hair Go to 3 • Continue until every species is sorted

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