Lab 5: Quantifying Cold Tolerance of Various Species of Drosophila, and its Evolutionary Relationshi

Weseealsothattheevolutionaryrelationshipbetweenthetwoa

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Unformatted text preview: 1003.23 25 Table1:Meanwakeuptimesandmidpointlatitudefor the16Drosophilaspeciesusedinthisstudy. Figure1:Graphofallthedatapoints,with correlationsandR2values.   Themeanwakeuptimesandmidpointlatitudeofthespeciestestedcanbe seenin Table1,andthegraphofthewake ­uptimesasafunctionofthelatitude,alongwiththe correlations,isshowninFigure1.TheR2valueforthecorrelationoflatitudeandwake ­uptime is0.30,withap ­valueof0.028;theR2valuefortheevolutionarycorrelationwasalso0.30,with ap ­valueof0.028.  Discussion  ForbothR2values,sincethep ­valueislowerthan0.05,thecorrelationscanbe consideredvalidandnotcoincidental.Acleartrendisvisibleinthedata,withhigher  ­latitude speciessuchasD.subquinariaandD.testaceahavingmuchfasterwake ­uptimesthanmore centralspeci...
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