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Chapter Outline
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14.1 Evolutionary Patterns at the Species Level
    Gene Flow
    Genetic Similarity

14.2 How New Species Originate
    Speciation by Geographic Isolation
    Polyploidy: Instant Speciation
    Other Speciation Mechanisms

14.3 The Maintenance of Reproductive Isolation Between Species
14.4 Evolutionary Patterns Above the Species Level
    Divergent Evolution
    Extinction
    Adaptive Radiation
    Convergent Evolution
    Homologous or Analogous Structures

14.5 Rates of Evolution
14.6 The Tentative Nature of the Evolutionary History of Organisms
14.7 Human Evolution
    The Genus Ardipithecus
    The Genera Australopithecus and Paranthropus
    The Genus Homo

Two Points of View on the Origin of Homo sapiens
OUTLOOKS 14.1: Evolution and Domesticated Cats
HOW SCIENCE WORKS 14.1: Accumulating Evidence for Evolution
HOW SCIENCE WORKS 14.2: Neandertals— Homo neanderthalensis or Homo sapiens?







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