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21世纪大学英语读写教程第一册克隆的课文介绍21世纪大学英语读写教程第一册有关克隆的课文介绍goodScienceorBaaaadJdeaChanaFreimansStiefelJustbeforePresidentClintonheadstothehospitalforkneesurgery,heasksanotherBillClintontomeetRussianPresidentBorisYeltsinatanoverseasmeeting.Meanwhile,athirdBillClintonisoutplayinggolf,whileafourthishelpingdaughterChelseawithascienceproject.Soundfar-fetched?Thatdaymaycome.ScientistsinScotlandrecentlyannouncedthat,forthefirsttime,theyhaveclonedanexactcopyofanadultsheep.Theclonedbabylamb,namedDolly,hastheexactsamegenesastheadultsheepfromwhichshewascloned.Inotherwords,thetwoareidenticaltwins;onlyDollyissixyearsyounger.ThegoalofembryologistlanWilmut,theleadscientist,istodevelopawaytoraiseidenticalsheepthatproducemedicationsforhumans.AweekafterWilmut'sannouncement,scientistsinOregondisclosedthattheyhadused