Unit-2-Cloning-Reading-谢师公开课课件.ppt

Cloning:Whereisitleadingus?,Whatsthedistinctionbetweennaturalcloningandman-madecloning?,Twins,Theywerebornnaturallyandidenticalinsexandappearance.,Twins,Naturalclone,Dollythesheep,Shewasclonedwhiletheotherswerebornnaturally.Dollywasa_sheep,whichwasan_repreduction.(无性繁殖）,cloned,HowdoesDollydifferfromothersheep?,asexual,Man-madeclone,Competition,Challengeyourself:trytoanswerthefollowingquestionsassoonaspossible.Ifanyoneofyoustandupfirstandanswerthequestionfluentlyandcorrectly,letsgivehimorherabighand,whichmeansheorshecanobtainonescoreforyourgroup.,bonus,1.Whatbenefitscanhumansgainfromcloning?,2.Whatproblemsmayarisewhenhumansarecloned?,Comprehending,I.Readthroughthepassageandmatchthemainideaofeachparagraph.(3mins),Thedefinitionofcloning.,Para1.Para2.Para3.Para4.Para5.,Themajorusesandproceduresofcloning,TheproblemsofDolly,TheeffectofDolly.,Peoplesreactiontocloning,CarefulReading,Readthetextindetails,Cloningisawayofmakinganexactcopyofanotheranimalandplant.,Whatiscloning?,Para1(1min),Thedefinitionofcloning,1.Howmanymajorusesdocloninghave?Firstly,commercialSecondly,research2.WhenwasthecloningofDollythesheepborn?,Para22mins,1996,Themajorusesandproceduresofcloning,Theprocedureofcloning,Atfirst,thefactthatDollydeveloped_inanaturalwaywas_.Thencamethe_newsthatDollyhadBecomeseriouslyill.Cloningscientists_tofindthatDollysillnessesweremore_.Finally,theproblemthatoccurredtothescientistswasthataclonedanimallives_theoriginalone.,Para32mins,TheproblemsofDolly,normally,encouraging,werecastdown,disturbing,aslongas/shorterthan/longerthan,appropriatetoamucholderanimal,shorterthan,Para41min,TheeffectofDolly,impact,Dollysappearanceraised_objectionsandhadagreat_themediaandpublicimagination.Itbecamearguable(_).,astormof,impacton,controversial,Para53mins,Trueorfalse:PeoplefearedthatClonedOsamaBinLadenwoulddoharmtotheworld.2Humancloningareencouraged.,Para5,Peoplesreactiontocloning,Manygovernmentsforbadereserchintohumanbeings.,Fromthelastparagraphwecaninferthat_.A.cloningwillcometoanendbecauseoftheobjectionsB.clonedhumanbeingswillbeproducedinthenearfutureC.manycountrieswillusecloninginawisewayD.alltheresearchintohumanbeingswillbeforbidden,C,theauthordoesnotstateanypersonalopinionaboutcloning.,A.Objective(befair)B.Negative(beagainstit)C.Positive(beinfavorofit),Thewritersattitudetowardscloning,Because_,Oh!myGod!Iwascloned!“哦！上帝啊！我被克隆了！”,Pairwork,Doyouwanttobecloned?Whomwouldyouliketoclone?andwhy?,Areyouinfavourofcloningpeopleoragainstcloningpeople?,Debating,Suggestanswers:1.Cloningisawayofmakinganexactcopyofanotheranimalandplant.Acloneisananimalorplantproducednaturallyorartificiallyfromthecellsofanotheranimalorplantandisexactlythesameasit.,2.Itcanhelpcurediseaseandcanhelpcoupleswhohavenobabytobearanewbaby.and.,3.TheremaybemorebadpeoplelikeHitler.and,4.Inmyopinion,Idonotagree,foritmaycausemanymoralproblems.OrasfarasIamconcerned,Iamforit,as,5.No.Theclonedbabyalsohasthedisease,cloning,Reading,Naturalcloneisonethatoccursinanaturalformofcloningwithouthumanhelp.,Man-madecloneisonethatproducedthroughhumanintervention(介入).,Lookatthesepicturesanddiscusswhichonesarenaturalclonesandwhichonesareman-made.Explainhowtheydiffer.,Discussion,Astrawberryplant,Thenewplantsthatgrowfromtherunnersareexactcopiesoftheoriginalplant.,Naturalclone,富贵竹插枝即活,Thegardenershouldcuttheplant,thenthecuttingproduceanothernewplant.,Growingnewplants,man-madeclone,IntensiveReading,FillinthechartonPage12usingtheinformationfromthetext.,Whichiseasiertoclone,plantoranimal?,Becausecloningplantsisstraightforward,butthecloningofanimalsisverycomplicated.,Discussion,Homework,1.TranslatetheprocedureofcloningDollythesheepintoChinese.2.FinishEx.1,2,3,Page12.,1996cloningsheeps,4.Shouldweclonehuman?Stateyouropinion.5.Couldaparentcloneachildwhoisdyingofaterminal(致命的）illness?,2001cloningcattle,我国成功繁殖克隆兔体形要比普通兔大许多,2002年5月中旬成功地繁殖了一只胚胎细胞克隆兔。,2002cloningcats,第一只克隆宠物猫,克隆马及其“母亲兼姐姐”,2002年4月十六日美国第一头克隆牛“艾米”产下牛犊喜作妈咪,2005cloningdogs,克隆的荧光小猪(左)和正常小猪(右),Astrawberryplant,Thenewplantsthatgrowfromt