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GMF转基因食品的利与弊英文课件

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ansurvivefrost;5.ineagainstavirusthatcauseschildhoodpneumonia.icallyModified(GM)CropsTraditionally,aplantbreedertriestoexchangegenesbetweentwoplantstoproduceoffspringthathavedesiredtraits.Thisisdonebytransferringthemale(pollen)anofanother.Thiscrossbreeding,however,islimitedtoexchangesbetweenthesameorverycloselyrelatedspecies.Itcanalsotakealongtimetoachievedesiredresultsandfrequently,characteristicsofinterestdonotexistinanyrelatedspecies.anyLogoGMtechnologyenablesplantbreederstobringtogetherinoneplantusefulgenesfromawiderangeoflivingsources,notjustfromwithinthecropspeciesorfromcloselyrelatedplants.Thispowerfultoolallowsplantbreederstodofasterwhattheyhavebeendoingforyears–generatesuperiorplantvarieties–althoughitexpandsthepossibilitiesbeyondthelimitsimposedbyconventionalplantbreeding.anyLogo

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