外研版高中英语Book6 Module5 Period3 vocabulary and reading(cloning and DNA).ppt

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1、VocabularyandReadingCloningandDNALanguagepointsbeforereadingthepassageacidDNAtwistingladderfundamentalcomponentsoflifethegeneticmake-upaproceduretouseenzymesasequenceofgenesinsert...into...hostcellbegeneticallyidenticalto...酸性DNA双螺旋结构生命基本元素基因构成利用化学酶的

2、程序一定顺序的基因把...植入...主细胞从遗传角度而言完全相同validreasonsoffer...asanoptionaltreatmentunderunknownpsychologicalpressurethetalentsofexceptionalhumanbeingsbecontradictorytopossesnewvicesinsteadofexsistingvirtuesobtainasupplyofstemcellsdevelopintorecoverfrom...正当理由把

3、...作为治疗方案处于未知的心理压下力非凡人物的天赋与...对立；截然相反拥有新缺点而不是已有的优点获得大量干细胞发育成为...从...康复过来repairhumantissuesvoluntarycodeofpracticecompulsarygovernmentregulationsbehandytocloneaprizecowresistbacteriaordiseaseresistrotsorpestsrestrictthebiodiversityofthebreedatacrimesc

4、ene修复人体组织不成文的职业规范强制性的政府规定便于克隆优质奶牛抵御细菌和疾病抵御枯病和虫害限制生物的多样性在犯罪现场1.Whydowehavethesamecharacteristicsasourparents?Becausewehaveinheritedgenesfromourparents.2.Whataregenes?Definition:TheDNAsegmentscarryinggeneticinformationarecalledgenes.Thescientificstudyo

5、fgenesiscalledgenetics.DNAisanucleicacidcontainingthegeneticinformation.Itisintheshapeofatransparenttwistingladder.Stemcellsareflexiblecellsthatcandevelopintoeveryothertypeofcellinthebody.CloningandDNAFast-readingHowmanypartscanthepassagebedividedint

6、o?What’sthemainideaofeachpart?(Para1to2)thediscoveryofthestructureofDNAandthefurtherstudyintoit.(Para3)howtoclonesomething(Para4to8)thereasonsforcloningPara1-31.Useinformationfromthetexttodefinethethreeterms:DNA,enzyme,clone.2.Whatarethescientists'ac

7、hievements?WatsonandCrickMendelCohenandBoyerPara1-21.Definetheterms:DNA,clone,enzyme.DNAisatransparenttwistingladdermadeoffundamentalcomponentsoflife.Acloneisanorganismwhichisgeneticallyidenticaltoanotherone.Enzymesarechemicalsformedinthebody.Theywon

8、’tbreakdowninchemicalreactions.Para1-22.Thescientists'achievements?WatsonandCrick:discovededthe__________ofDNA.Mendel:understoodthatboththe________plantshad____________thegenetic__________ofthenewplant.CohenandBoyer:discovereda__________touseenzymest