Mike's%20Revised%2008%20Evolution%20I%20%20PMB13

Mike's%20Revised%2008%20Evolution%20I%20%20PMB13 -...

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Unformatted text preview: Evolutionary Just So Stories 1. Darwinian step-wise selection. Explaines adaptedness. 2. Neutral fixations (small populations=bottlenecks). Explains much of the facts about molecular evolution. Spandrels are neutral byproducts of 1 above. 3. Mutations or rare chromosomal events-- like tetraploidy-- push evolution in particular directions. Sometimes called “Mutationism.” Was excluded from modern evolutionry Thought (1940’s and 50’s) until genomes became sequenced. Only #3 “goes anywhere.” How did the __ giraffe _get it _long neck_ ? green plastid mitochondrion Welcome Genome duplications Gene Lists GEvo Finding Synteny Genome duplication Genome rearrangements fractionation (diploidization) Genome duplication Ancestor Genome rearrangements fractionation (diploidization) Arabidopsis Papaya Grape Poplar Genome duplication Genome rearrangements fractionation (diploidization) Overview of phylogeny and genome duplication events in sequenced eudicot genomes: Since their divergence, At has had two genome duplication events (known as alpha and beta, the former being the most recent), Pt has had one genome duplications, and Cp and Vv have had none....
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This note was uploaded on 04/11/2009 for the course PMB 13 taught by Professor Freeling during the Spring '09 term at Berkeley.

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Mike's%20Revised%2008%20Evolution%20I%20%20PMB13 -...

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