They do that in a very special way in that they - restriction enzymes are able to identify a particular sequence of bases in a gene.

限制性内切酶的工作机制很特别,它能识别基因中的一段特定的碱基序列

耶鲁公开课 - 生物医学工程探索课程节选

I could cut that up into fragments, and I could search in these fragments to try to find the one that has the insulin gene on it.

我把那部分切成碎片,然后从中找到有胰岛素基因的那一段

耶鲁公开课 - 生物医学工程探索课程节选

In a normal cell DNA that DNA in the normal cell - this DNA gets cut by the restriction enzyme, so the sickle gene ends up - so that hemoglobin gene ends up in two pieces.

一个正常细胞的DNA,正常细胞里的DNA,会被限制酶所剪切,因此镰状血红蛋白基因--,不对,是正常血红蛋白基因被切成两段

耶鲁公开课 - 生物医学工程探索课程节选