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Chapter 20: Phylogeny and the Tree of Life – Study Guide and Key Concepts

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Introduction to Taxonomy

  • Introduction to Taxonomy Example 2
    01:37
  • Categorizing Life Based on Energy Acquisition
    05:48
  • Introduction to Taxonomy
    02:23

Phylogeny

  • Phylogeny Example 3
    04:12
  • Parts of a Phylogenetic Tree
    05:16
  • Phylogeny Example 1
    06:11

Building Phylogenetic Trees

  • Shared Derived Characters
    05:42
  • Parsimony
    06:46
  • Building Phylogenetic Trees Example 1
    04:35

Cladistics

  • Cladistics Example 1
    03:52
  • Monophyletic, Paraphyletic, & Polyphyletic Group
    06:37

Natural Selection and Evolution

  • Natural Selection Causes Adaptation
    07:48
  • Adaptation Improves Fitness
    02:57
  • Evolution can Occur Via Natural Selection
    04:32

Genetic Variation

  • Sources of Genetic Variation
    02:16
  • Sexual Reproduction and Recombination
    05:08
  • Mutations
    06:42

Mutations

  • Mutations
    02:29
  • Types of Mutations
    08:44