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

Lab 5 quantifying cold tolerance of various species

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Unformatted text preview: Lab5: QuantifyingColdToleranceofVariousSpeciesofDrosophila,andits EvolutionaryRelationship                ManuelVazquez 05/01/2012  Introduction  Drosophilaisagenusofflieswhoserangeextendsaroundtheworld,withparticular speciesdensityfoundinthetropics,butwithcertainspeciesbeingnativetoevenalpine climates.Duetothiswiderange,differentmembersofthegenusmustbeequippedwith adaptationstodealwiththedifferencesinclimatesintheirrespectiveregions.Ofp articular interestinthisexperimentisthecoldtoleranceofvariousspeciesof Drosophilafromdifferent latitudes.Themoredistantfromtheequatoraspeciesis,thecolderitshabitatbecomes; therefore,tocompensate,morenorthernspeciesmustcomeupwithasystemtoresistthe coldandrecoverfromfreezingconditionsquickly;thus,ifaspeciesweretocomefroma northernlatitudeline,andweresealedinfreezingconditions,andthenallowedtorecoverat roomtemperature,itshouldrecoverfasterthanamemberofaspeciesthatcomesfroma moretropicalregion.However,thereisthequest...
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  • Spring '12
  • ProfessorHyatt
  • Biology, Evolution, adaptations0200to0200deal0200with0200the0200differences0200in0200climates0200in0200their0200respective0200regions.0200Of0200p articular0200, interest0200in0200this0200experiment0200is0200the0200cold0200tolerance0200of0200various0200species0200of0200 Drosophila0200from0200different0200, line0200was0200then0200generated0200under0200the0200assumption0200that0200the0200 data0200generated0200was0200due0200to0200, The0200mean0200wake0200up0200times0200and0200midpoint0200latitude0200of0200the0200species0200tested0200can0200be0200 seen0200in0200, which0200hypothesis0200 0200the0200phylogenetic0200or0200, )0200had0200

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