If I wanted to link another nucleotide to this DNA chain what would I attach here on the bottom?

如果想把另一核苷酸连接到这条DNA链,我将会在DNA链末端添加什么

耶鲁公开课 - 生物医学工程探索课程节选

You can just say it's RNA or DNA and you know everything about the pentose in every molecule on the chain.

你只需要说它是一个RNA或者DNA,就能知道,每个核苷酸分子的戊糖

耶鲁公开课 - 生物医学工程探索课程节选