Selective breeding over time created these wide variations, but the process depended on nature to produce the desired gene.
长时间选择性的培育创造了这些广泛的变种，但是这个过程还是要依赖大自然来产生出所需的基因。
Success in any cloning experiment depends on being able to identify the desired gene sequence among the many different recombinants that may be produced.
任何克隆实验的成功依赖于从很多不同的重组子中鉴别目的基因序列。
Humans then chose to mate individual animals or plants that carried the particular gene in order to make the desired characteristics more common or more pronounced.
之后人类选择具有独特基因的动物或植物个体进行配对，使它们那些为人所需的特性变得更为普遍和显著。
The promise of gene therapy has long been held up by the lack of a safe and effective way to insert the desired therapeutic genes into the right cells.
基因疗法曾经由于缺少安全和有效的方法将治疗性基因转导入细胞内部而被认为没什么发展前景。
Conclusion With this method the desired multi-copy gene can be obtained that lays the foundation for highly effective expression.
结论该方法能方便高效地获得所需的多拷贝基因，为进一步进行高效表达打下基础。
A given system, for example, a gene encoding an enzyme, and a desired engineering performance goal, such as catalytic turnover, are identified.
一个给定系统，比如，一个基因编码一种酶，一个志向的工程功能标的，如催化的交易额，是判断的。
Gene delivery system is one of components of a gene medicine, which deliver the therapeutic gene to the desired location of the body.
基因传递系统将治疗基因运送到目标部位，是基因药物的组成部分之一。
Whether the exogenous gene of the conversion can be expressed correctly, efficiently and as desired in the plant recipient is of current concern.
转化的外源基因在植物受体组织中能否正确、高效并按照人们的意愿特异地表达是人们非常关注的问题。
Whether the exogenous gene of the conversion can be expressed correctly, efficiently and as desired in the plant recipient is of current concern.
转化的外源基因在植物受体组织中能否正确、高效并按照人们的意愿特异地表达是人们非常关注的问题。
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