In nineteen seventeen, Cornell University scientist Lewis Knudsen found that under certain conditions, the fungus was not needed.

VOA: special.2010.04.06

That tells you something about the physical chemistry of the molecule; that it's these hydrogen bonds that hold the double strands and I can break those down under certain conditions.

我们从中可以知道一些,DNA分子的理化特点,双链是由氢键连接在一起,在一定条件下这些氢键可以断裂

耶鲁公开课 - 生物医学工程探索课程节选