反对克隆的原因和赞同克隆的原因

反对克隆的原因和赞同克隆的原因　反对克隆的原因和赞同克隆的原因　反对克隆的原因和赞同克隆的原因，还要有自己的观点　Westhusin＇s experience with cloning an

反对克隆的原因和赞同克隆的原因 反对克隆的原因和赞同克隆的原因 反对克隆的原因和赞同克隆的原因，还要有自己的观点 Westhusin＇sexperiencewithcloninganimalsleaves himupsetbyallthistalkofhumancloning.Inthreeyears ofworkontheMissyproject,usinghundredsupon hundredsofdog＇seggs,theA&Mteamhasproduced onlyadozenorsoembryos(胚胎)carryingMissy＇s DNA.Nonehavesurvivedthetransfertoasurrogate(代 孕的)mother.Thewastageofeggsandthemany spontaneouslyabortedfetuses(胎)maybeacceptablewhen you＇redealingwithcatsorbulls,heargues,butnotwith humans."Cloningisincrediblyinefficient,andalso dangerous,"hesays. Evenso,dogcloningisacommercialopportunity, withaniceresearchpayoff.EversinceDollythesheep wasclonedin1997,Westhusin＇sphonehasbeenringing withpeoplecallinginhopesofduplicatingtheircatsand dogs,cattleandhorses."Alotofpeoplewanttoclone pets,especiallyifthepriceisright,"saysWesthusin.Cost