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Structure and Function in Living Things

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Structure and Function in Living Things. Chapter Fifteen: The Diversity of Life. 15.1 Taxonomy and Systematics 15.2 Algae and Fungi. Investigation 15A. Creature Cladogram. What type of information can be used to create a cladogram?. 15.1 Taxonomy and Systematics.

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chapter fifteen the diversity of life
Chapter Fifteen: The Diversity of Life
  • 15.1 Taxonomy and Systematics
  • 15.2 Algae and Fungi
investigation 15a
Investigation 15A

Creature Cladogram

  • What type of information can be used to create a cladogram?
15 1 taxonomy and systematics
15.1 Taxonomy and Systematics
  • Scientists classify organisms according to their characteristics and evolutionary relationships.
  • This process is called systematics.
15 1 taxonomy and systematics6
15.1 Taxonomy and Systematics
  • A Swedish scientist and explorer named Carolus Linnaeus (1707–1778) developed a system of classification called taxonomyin the 1700s.
  • Linnaeus classified living things according to their shared characteristics.
  • There are currently seven levels of classification.
15 1 scientific names
15.1 Scientific Names
  • A scientific nameis the two-part, scientifically recognized name given to an organism, consisting of its genus and species.
15 1 scientific names9
15.1 Scientific Names
  • You may have a difficult time understanding scientific names because they are usually in Latin or Greek.
  • Felisis Latin for “cat” and domesticusis Latin for “domesticated.”
15 1 what is systematics
15.1 What is systematics?
  • Darwin’s theory of evolution led to the development of systematics.
  • Systematicsis the process of classifying living things according to evolutionary relationships.
  • Today, scientists may use DNA analysis to classify living species.
15 1 what is systematics11
15.1 What is systematics?
  • The evolutionary development of primates can be shown on a simple cladogram.
  • The characteristics listed along the right distinguish the levels above each node (the point where two branches meet).
  • The nodes indicate a common ancestor between two groups.
15 1 evolution and the six kingdoms
15.1 Evolution and the six kingdoms
  • An evolutionary treeis a diagram with many branches that shows evolutionary relationships among organisms, both living and extinct.
  • In a complete evolutionary tree, the levels of classification (phylum, class, order, etc.) would branch off from each kingdom all the way down to the species level.