where you get the evol'n of many spp from a common ancestor-Rapid evolutionary change w/in a single lineage. .. → and those desc'n spp live in a wide diversity of habitats-OR when one lineage produces many descent spp. .. -New opportunities, changing enviros --Ecological opportunity & Morphological innovation-Adaptive Radiation One spp doesn't always change at the same pace-Diff features evolve at different rates-Rates of evolutionary change aren't constant ...depending on sel'n factors, other mechs of evol'n. .. Evolved after a finch-like ancestor colonized the islands-All different spp inhabit different enviros-Variety in beak shape, size, diets-Hawaiian honey creepers: diverse lineage of song birds colonization of new habitats ○ Ecological opportunity : availability of new types of resources -When habitats are unoccupied by competitors • or resources that become available -Would primates have evolved if dinos didn't go extinct and all the habitats didn't become unoccupied?-
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This note was uploaded on 03/15/2011 for the course BIOL 1010 taught by Professor Anafi/quinlan during the Spring '08 term at York University.