university of florida bsc2010 biology 1 ch26 25 slides

May 6th, 2015
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university of florida bsc2010 biology 1 ch26 25 slides

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BSC LectureWeek 13Chs. 26, 25Fig. 26-5Branch point(node)Taxon ATaxon BTaxon CANCESTRALLINEAGETaxon DTaxon ETaxon FCommon ancestor oftaxa AFPolytomySistertaxaFig. 26-6RESULTSMinke(Antarctica)Minke(Australia)Unknown #1a,2, 3, 4, 5, 6, 7, 8Minke(North Atlantic)Unknown #9Humpback(North Atlantic)Humpback(North Pacific)Unknown #1bGrayBlue(North Atlantic)Blue(North Pacific)Unknown #10,11, 12Unknown #13Fin(Mediterranean)Fin (Iceland)Fig. 26-7Fig. 26-81Deletion2Insertion34Fig. 26-11CHARACTERSTAXALancelet(outgroup)LampreyTunaSalamanderTurtleLeopardLancelet(outgroup)Vertebral column(backbone)011111Hinged jaws001111LampreyTunaVertebralcolumnSalamanderHinged jawsFour walking legsAmniotic (shelled) eggHair(a) Character table000111000011000001TurtleFour walking legsAmniotic eggLeopardHair(b) Phylogenetic treeFig. 26-14aHumanMushroomHumanMushroomTulip030%40%040%Tulip(a) Percentage differences between sequences0Fig. 26-14b15%5%5%15%15%10%20%Tree 1: More likely(b) Comparison of possible trees25%Tree 2: Less likelyFig. 26-18aAncestral geneAncestral speciesSpeciation withdivergence of geneSpecies A(a) Orthologous genesOrthologous genesSpecies BFig. 26-18bSpecies AGene duplication and divergenceParalogous genesSpecies A after many generati

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