A newly discovered gene is believed to act as a biological switch, turning other genes on or off.

Some genes turn other genes on and off at certain times or in certain tissues of the body.

The soup of biochemicals at work is governed by the switches that turn genes on and off.

Pathways can also turn genes on and off, or spur a cell to move.

The protein is a so-called transcription factor that turns other genes on and off, he said.

Similar mechanisms are found in human brains-caregiver behavior matters for turning genes on and off.

Therefore, since it turns genes on and off, it is clearly important.

They do not turn genes on, however; they keep them inactive.

The last part of the chapter got particularly interesting, since it explained the elaborate mechanisms that turned genes on and off.

The inducer can remove this repressor, turning genes back on.