CAS BI 107 Lecture Notes - Lecture 15: Extinction Event, Adaptive Radiation, Synapomorphy
4 Nov 2016
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Document Summary
Not mass extinction, colonization of new regions or habitats, evolution of a novel morphology and/or behavior. Mass extinction, colonization of new regions or habitats, and evolution of novel morphology all lead to ecological opportunity. The most important factor leading to adaptive radiation is. Ecological opportunity is the key regardless of the source. Phylogeny: either 4 or 5 times, originated from simian iv, why hiv1 more infective than hiv2, phylogenetic inference has been entered into law, accepted as evidence in a court case. Mass extinction is most often caused by: rapid environmental change. Not extraterrestrial bolide impact, plate tectonics, or volcanism. All 3 cause rapid environmental change: phylogenetic trees are depictions of evolutionary relationships, hypotheses of lineages, root to the tip past to the present, hiv invaded human populations on multiple occasions. Because it comes from our closest relatives (the chimpanzees) Lots of birds, pigs, and humans all in one area.
