bio lecture 5 - (a Anagenesis Modes of speciation...

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Click to edit Master subtitle style BIO 311D LECTURE 5 Macroevolution (evolution of species)
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Speciation What defines a species? What are the criteria we should use?
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Morphological species concept
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Biological Species Concept
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Problems with the biological species concept: Circular overlap
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Reproductive isolation
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Summary of species definitions
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Types (or patterns) of evolution
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Types (or patterns) of speciation Anagenesis Cladogenesis (b) Cladogenesis
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Unformatted text preview: (a) Anagenesis Modes of speciation Allopatric speciation Sympatric speciation Allopatric speciation Allopatric speciation A. harrisi A. leucurus Sympatric speciation Sympatry due to polyploidy Ring speciation (circular overlap) Adaptive radiations Camb radia Biodiversity – importance and changes Dispersal Vacariance Extinction Permian Ordovician Devonian Permian Triassic Cretaceous ?...
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This note was uploaded on 03/20/2011 for the course BIOLOGY 311D taught by Professor Zhaimingzhao during the Fall '10 term at University of Texas.

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bio lecture 5 - (a Anagenesis Modes of speciation...

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