1 therangeoftaxagoingex4nct 2

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Unformatted text preview: ap4ve Radia4ons •  Characterized by rapid prolifera4on of new species •  Can result from –  invasion of new habitats (e.g. islands are sites of many cases of adap4ve radia4ons) –  Evolu4on of a key adapta4on (e.g., shelled egg, vasculur system in plants) –  Reinforcing adapta4on (flowering plants and insects) Specia4on in nature •  Is rela4vely unaffected by human habita4on or behavior •  Rates are variable over evolu4onary 4me •  Specia4on is well understood retrospec0vely but less well understood prospec0vely: the current state of knowledge for ongoing specia4on m...
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This document was uploaded on 12/01/2012.

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