Animal Behavior/Speciation

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Every individual alive today, the highest as well as the lowest, is derived in an unbroken line from the first and lowest forms - August Frederick Lopold Weismann, German biologist/geneticist (1834–1914)


  • Anagenesis
  • Cladogenesis

Allopatric Speciation[edit]

Sympatric Speciation[edit]