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1、新人教版新人教版 选修八选修八 Unit 2 CloningWarming up&Reading 主讲教师单位：山东省泗水县第一中学主讲教师单位：山东省泗水县第一中学主讲教师：魏丽滨主讲教师：魏丽滨I.Revision Give the correct Chinese meaning of the wordsor the specific English words.differ着手；从事；承担着手；从事；承担pay off携带者；搬运工；运输工具携带者；搬运工；运输工具cast down反对；不赞成反对；不赞成correction总共；完全地总共；完全地obtain禁止；不准禁止；不准bre
2、akthrough程序；步骤；手续程序；步骤；手续撞击；冲击；巨大的影响撞击；冲击；巨大的影响straightforwardn.双胞胎之一；双胞胎之一；adj.成对的；成双的成对的；成双的命运；天命命运；天命道德上的；伦理的道德上的；伦理的complicatedCloneII.Leading-inWhat would you think of when you see this word?DollyWhat is special about Dolly?She was cloned by the scientists while the other sheeps were born natur
3、ally.far？man-made cloneA strawberry plantGrowing new plants with cuttingstwinsAre they man-made or natural?natural cloneclonenatural clone(new plants&twins)man-made clone(Dolly)Where is it leading us?Which one appeared earlier?Reading 1 Cloning:Where is it leading us?IV.Fast reading:Find the main id
4、ea of each paragraphTwo major uses and the procedures of cloning.The definition(定义定义)of cloningThe impact of Dolly.Peoples reactions to cloning.Para.1Para.2Para.4Para.5The problems of Dolly.Para.3Cloning is a way of making an exact copy of another animal and plant.1.What is cloning?Para.1 The defini
5、tion of cloning V.Detailed reading2.It happens in plantsin animalsnatural clonestwins identical in sex and appearance1.What are the major uses of cloning?2.When was Dolly the sheep born?Para 21996The major two uses and procedure of cloningFirstlyGardeners use it all the time to produce _quantities o
6、f plants.SecondlyIt is valuable for _on_ and for_on_commercialresearch new plant speciesmedical research animals.man-made clonegive birth toegg cell(卵细胞卵细胞)remove the nucleus 无核卵细胞无核卵细胞 somatic cell 体细胞体细胞take out the nucleus取出细胞核取出细胞核joined with electricity用电融合细胞用电融合细胞 carrier（代孕母羊）（代孕母羊）divides an
7、d grows into an embryo细胞分裂形成胚胎细胞分裂形成胚胎3.How to produce a cloned sheepbreakthroughsuccess?Para 3:The problems of Dolly1.What happed to Dolly？She became seriously ill and then died.2.At what age did Dolly die?Six and a half years old.3.How many years will a natural sheep live?13 years.4.Did other clon
8、ing animals live long?No.Sadly the same arbitrary fate affected other species,such as cloned mice.,half the length of The word“controversial”in para.4 probably means_.A.complicated B.arguable C.importantPara 4:The impact of DollyBLets read paragraph 4 together.True or false:1 People feared that clon
9、ed evil leaders would do harm to the world.2 All the research into human beings will be forbidden.3 Some countries will use cloning in a wise way.Para 5:Peoples reactions to cloning.TFSome governments forbade research into human beings.Tdisaster！What are the problems/disadvantages and advantages of
10、cloning?(Ex.2,P12)VI.Summary:Problems/disadvantages of cloningAdvantages of cloningProblems/disadvantages of cloningAdvantages of cloningAnimal clones may develop the illness of older animals.Animal clones may die younger than the normal animals.Evil leaders may want to clone themselves.There are mo
11、ral objection to cloning human beingsMedical cloning could produce cures for serious illnesses in human.Cloning plants can produce plants of similar quality for saleCloning plants can be useful for research on new plants species.Cloning can help save endangered animals?What will happen if human can
12、be cloned?Whats your opinion about this question?Its terrible.It should be forbidden completelyIt can help people.We should make full use of itIX.Homework1.Write an article based on your imagination what will happen if human can be cloned?2.Prepare for the language points study.Thanks for your atten
13、tion!Thanks for your attention!Thanks for your attention!2001 cloning cattle我国成功繁殖克隆兔我国成功繁殖克隆兔 体形要比普通兔大许多体形要比普通兔大许多2002年年5月月中旬成功地中旬成功地繁殖了一只繁殖了一只胚胎细胞克胚胎细胞克隆兔。隆兔。2002 cloning cats第一只克隆宠物猫第一只克隆宠物猫克隆马及其克隆马及其“母母亲兼姐姐亲兼姐姐”2002年年4月十六月十六日美国第一头日美国第一头克隆牛克隆牛“艾米艾米”产下牛犊喜产下牛犊喜作妈咪作妈咪2005 cloning dogs克隆的荧光小猪克隆的荧光小猪(左左)和正常小猪和正常小猪(右右)A strawberry plantThe new plants that grow from the runners are exact copies of the original plant.一株草莓依靠它沿地一株草莓依靠它沿地“爬走爬走”的匍匐茎的匍匐茎,一一年内就能长出数百株草莓苗年内就能长出数百株草莓苗