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BIOL 1004.docx

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Department
Biology
Course Code
BIOL 1004
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all

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HowPopulationEvolve20130107131DarwinEvolutionIdeathatspeciesandalllivingthingsweseetodayaredescendantsofancestralspeciesDifferentViewsonEvolutionAristotleSpeciesasperfectandpermanentJudeoChristianSpecieswereindividuallydesignsbydivinecreatorFossilsImprintspastorganismsIllustratethatspeciesnolongerseentodaywereonceonthisearthLamarcklookedathowthingsevolvedBodypartsthatarenotusedtraitswillbechangedandthenpassedofftoitsoffspringAdaptationdescentwithmodificationasspeciesmoveintovariousenvironmentstheyacquireandcollectavarietyofmodificationsendgoalistofitintotheenvironment132133ArtificialSelectionPickingandbreedingwithdesiredtraitovermanygenerationExDogbreedingNaturalSelectionGenotypiccharacteristicsthatarebettersuitedtoanenvironmentismorelikelysurviveandreproducethusincreasingthetraitsfrequencyandincreasingthespecieschanceforsurvivalPreventpopulationfromoverproducingNaturalDisasterIncreaseinPredatorsPopulationDecreaseinfoodlevelsTraitsthatcanbettertolerateharsherconditionshaveahigherpercentageofpassingonthetraitNaturalselectionwillpickthebesttraitsneededtomeetthedemandsofthenewenvironment3keypointsofNaturalSelectionindividualsdonotevolvebutthepopulationinteractionbetweenanindividualanditsenvironmentleadstonaturalselectiontraitscanonlybeamplifiedordiminishesnotgoaldrivenperfectorganismsarenotobtainedresultofenvironmentalfactorsthatchangefromplacetoplaceadaptionisacompromiseasonetraitisenhancedanotherisweakenedaneditingprocessexPresentsofthepesticideleadstonaturalselectionheavilydependentontimeandplace134FossilsDocumentpastandpresentspeciesFactthatmanyspecieshavebecomeextinctManyarereplicasDeadorganismisleftinsedimentdecayandmouldisleftandfilledwithwaterandmineralsTraceFossilsRemainsoforganismsbehaviourFootprintsburrowsPalaeontologistStudyfossilsFossilRecordspatterninwhichfossilsappearinsedimentarylayersStrataLayersResultofsedimentationandvariationinparticletypesthatsettleovertimeFossilsShoworganismevolutionsequenceRadiometricDatingDeterminesrocksage135EvidenceSupportingEvolutionBiogeographyDistributionofspeciesCausedbymigrationIsolationvsOpenComparativeAnatomyHomologyCharacteristicallysimilaritiesbetweenspeciescausedbycommonancestryHomologousStructuresStructuresthataresimilarbecauseofcommonancestrybuthavedifferentfunctionsDescentWithModificationstructureismodifiedtotakeonanotherfunctionVestigialStructures
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