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1、考研英语阅读材料汇编之科技类(1)阅读是考研英语的重要题型之一，也是保障英语成绩的关键题目。因此，考研学子们要充分重视英语阅读，除了平时多多阅读英语杂志、报纸外，还需要针对阅读进行专项训练。小编整理了关于考研英语阅读题源的系列文章考研英语阅读材料汇编之科技类(1)，请参考!
IsSnuppythePuppyforReal?
WithHwangsscientificcredibilityinshambles,thestatusoftheworldsmostfamousdoghangsinthebalance.Theembattledscientistmaintai
2、nsthatSnuppyistheworldsfirstcanineclone,andheevenhiredanindependentKoreanDNAlab,HumanPassInc,toverifythatassertion.Theverdict:HumanPassCEOSeungJaeRheetoldTIMElastweek,Thereisnodisputeabouttheseresults,andsoIam100%certainonSnuppysauthenticity.ButsinceHumanPassisinessenceworkingforHwang
3、,thatshardlygoodenoughfortheinvestigativepanelatSeoulNationalUniversity,whichiscarryingoutindependenttests,orfortheeditorsofNature,whohaveorderedaninvestigation.
IfSnuppyreallywasclonedfromtheearcellofa3-year-oldmaleAfghannamedTai,it
shouldntbetoughtoprove,eventothoseoutsideinvestigat
4、ors.Aslongastheyhavetissue
samplesfromboththecloneandtheparent,theyshouldbeabletodeterminewhether
DNAinthenucleiofbothanimalscellsisidentical-thefirsthallmarkofatrueclone.
IanWilmut,theScottishscientistwhocreatedDollythesheepin1996,hadtoprovidesuch
samplestoprovetoskepticsthathehadcre
5、atedhistorysfirstmammalianclone.
Evenwiththecontroversyragingoverhisstem-cellpaper,Hwangcouldhaveforestalled
someofthequestionsaboutSnuppyifhehadofferedoneadditionalbitofconfirming
proofinhisoriginalpaperinNature.Thatpieceofcriticalevidencecomesfromtheanimals
mitochondria,tinyenergy-p
6、roducingstructureswithineachcell.Whilemostofamammals
DNAresidesinthenucleus,theresalsosomeinthemitochondria.(NuclearDNAforms
theanimalsbasicgeneticblueprint;mitochondrialDNAcontainsinstructionsformaking
proteinsinvolvedinvariousmetabolicfunctionswithinthecell.)
MitochondrialDNAispasse
7、ddownfromthemotherasgartoftheeggsgenetic
contribution.Identicaltwins,forexample,havethesamenuclearandmitochondrialDNA,
sincetheyreproducedwhenasingleeggisfertilizedandtheresultingembryosplitsintwo.
Withaclone,thesituationisdifferent.BecausethecloningprocessthatHwangsaysheused
tocreate
8、Snupp
