第二中有可能使用克隆技术的广大阶层包括携带会给后代造成严重的遗传病的突变基因的个人或夫妇。
A second broad class of possible users of cloning technologies includes individuals or couples whose genes carry mutations that might cause serious genetic disease in their offspring.
迄今文献中报道枯草杆菌基因克隆化都采用枯草杆菌168株及其突变体。
So far, only Bacillus subtilis 168 and its mutants have been used for gene cloning in the species.
大麦突变体的获得和深入研究是开展大麦基因克隆和功能研究的关键，是利用生物技术手段改良大麦农艺性状的基础。
Acquiring barley mutants and research on them was key for gene clone and function analysis, and was the base of improvement for agricultural character using biotechnology.
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