Inthepast,scientistshaveproducedexactgeneticcopiesofshe...
问题详情:Inthepast,scientistshaveproducedexactgeneticcopiesofsheepandafewother__1__theseclonesfromasinglecellofanadultanimal.Recently,aprivategroupofscientistshasannounced__2__tomakeanexactcopyofahumanor...