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高中英语 unit3 science versus nature-welcome课件 牛津译林版必修5 课件.ppt

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ScienceVersusNatureVSDollywasthefirstclonedmammalcreatedbyaScottishscientistandhisgroupin1996.Dollywasexactlythesameashermotherinappearanceandingenes.Thisnewtechnologyiscalled‘cloning’whichproducesanexactcopyofananimaloraplantfromitsowncells.ThinkabouttherelationshipbetweenthetitleoftheunitScienceversusnatureandcloningtechnology.Themuleinthepictureistheworld’sfirstclonedmule.Itwasbornon4May2003.HisnameisIdahoGemandhisbrotherTazwasaracingmulethathaswonmanycompetitions.ThekitteninthepictureiscalledCc.Itsnameisfrom‘Copycat’.ScientistsintheUSAcreateditwithacelltakenfromitsmotherRainbow.ItwasborninDecember2002.JustcallmeNoelOK?Thepairofcalveswerebornon5July1998inIshikawaJapan.TheyweretwoyearsyoungerthanDollybeingthesecondadultanimalclonesintheworld.ThenameoftheclonedmonkeyisANDi.Itisfrom‘insertedDNA’speltbackwards.Itisthefirstgeneticallymodifiedmonkey.ThetechnologyisdifferentfromthatusedforDolly.Formgroupsoffourorsixtodiscussthefurtherquestions:1.Fromjustthesepicturescanyouidentifythedifferencesbetweentheclonedanimalsandnormalones?2.Inyouropinionwhatmightbethedifferencesbetweentheseclonedanimalsandnormalones?Cantheseanimalsleadanormallifeasnormalanimals?3.Askseveralgroupstoreporttheiranswerstotheclass.Allowdifferentopinionsandencouragefurtherdiscussion.Holdadebateaboutwhetheritwouldbeagoodideatoclonehumanssomeday.HomeworkSurftheInternetorrefertoothersourcesforfurtherinformationrelevanttocloningtechnologysoastofinishthefirsttwoquestionsbelowthepictures.Makeasmanynotesaspossible.