cloning and DNA

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1、Module5CloningandDNAWARMINGUPBYWORDSREVIEWING…Goalsforreading:TodescribethefollowingitemsinEnglish:DNAcloningclone2Toexplainreasonsaswellasvicesandvirtuesinaproperway.BrainstormcloningDNAsequenceprocedureinsertgenetic(s)embryoenzymetissuesalivastemcellge

2、neorganismWhat’sthewritingstyleofthispassage?What’sthewriter’spurposebywritingthepassage?What’sthewriter’sattitudetowardscloningorthestudyingofDNA?A.ApprovingB.CriticalC.ObjectiveD.IndifferentExposition(说明文).TointroducesomefactsaboutcloningandDNA.Objecti

3、ve.WHY???SkimmingPart1:Para.___to____Part2:Para.___Part3:Para.___to____Dividethepassageintothreepartsandfindoutthemainideaofeachpart.12348thediscoveryofDNAandcloningthewayhowcloningworksthereasonswhyscientistswantcloningorthestudyingofDNAandtheirrelative

4、disadvantagesWhat’sDNA?Findoutthefactsaboutthefollowingtimes.186619531973Carefulreading:Partone(para.1&2)What’sDNA?DNAisa_____________________________madeofthe______________________oflife.transparenttwistingfundamentalcomponentsladder一种由生命的基本成分构成的透明的双螺旋结

5、构1866Mendelfirstrecordedtheresultsofgrowing_______plants.Heunderstoodthatboththeparentplantshadinfluencedthe___________________ofthenewplant.1953TwoscientistsinEngland__________the__________ofthe__________DNA.1973Two__________discovereda__________touse__

6、________to_______DNA,tocutouta__________of_______,andfinallyto_______themintothehost_______.peageneticmake-updiscoveredstructureacidbiochemistsprocedureenzymesunzipsequencegenesinsertcellCareful-readingFindtheexpressions解码DNA截取一段序列的基因3.把它们插入宿主细胞UnziptheD

7、NACutoutasequenceofgenesInsertthemintothehostcellPara2cut短语CutdownCutoffCutoutCutinCutthrough杀死;砍到;缩减切断;中断;停止删除=leaveout;截取插话刺穿；抄近路走过Whatiscloning?2.Whatisaclone?CarefulreadingParttwoCloningtakesDNAfromasingle_______to_______awholenew__________.cellcreat

8、eindividualAcloneisan__________whichisgenetically__________toanotherone.organismidentical一个克隆物是基因与另一个生物个体完全相同的生物体ButrememberWe=Ourgenes+Ourenvironment…an________treatmentforcoupleswhocan’thavechildren…reproducethe________o