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基因工程育种中，常用两种限制酶同时切割目的基因和载体，以保证重组dna序列的唯一性。利用带有两种标记基因的质粒构建的重组质粒，有利于筛选导入了 Template






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tomski基因工程育种中，常用两种限制酶同时切割目的基因和载体，以保证重组dna序列的唯一性。利用带有两种标记基因的质粒构建的重组质粒，有利于筛选导入了 coloring
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基因工程育种中，常用两种限制酶同时切割目的基因和载体，以保证重组DNA序列的唯一性。利用带有两种标记基因的质粒构建的重组质粒，有利于筛选导入了 sketch template
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如图是国利用基因工程方法生产人生长激素的示意图．图中的质粒是基因工程中常选用的载体 PBR322质粒ampR表示青霉素抗性基因tetR sketch template
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图一是利用基因工程生产人胰岛素的主要流程图图二是生产过程中所制备的带有目的基因的供体DNA分子及运载体的示意图箭头所指为相应限制酶的识别位 sketch template
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