Here the unique thing was that there's a restriction site inside that is present in normal DNA and not present in sickle DNA.

刚才例子中,特性就是在正常的基因中,有酶切位点,而在患者的基因中却没有

耶鲁公开课 - 生物医学工程探索课程节选

That's why molecular biology, one of the reasons why it's turned out to be such a powerful tool, because if you can think creatively you can find all different ways to using these very simple principles to recombine molecules, to make unique new DNA sequences.

这就是分子生物学,如此有用的原因之一,因为如果你有创造力,你可以用各种方法,运用这些简单的原理来重组分子,创造独特的DNA新序列

耶鲁公开课 - 生物医学工程探索课程节选