I showed you this in this picture here and those levels of control can be at the level of transcription.

我把这些都给你们显示在这张图上,调控可以在转录的水平下进行

耶鲁公开课 - 生物医学工程探索课程节选

The most basic control is by controlling when transcription happens.

最基本的途径,是调控细胞转录

耶鲁公开课 - 生物医学工程探索课程节选