Question

If the level of lactose is low what happens to the lac operon system?

Answer 1

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Glucose present, lactose present: Low-level transcription of the lac operon occurs. The lac repressor is released from the operator because the inducer (allolactose) is present. ... Thus, CAP remains inactive and cannot bind to DNA, so transcription only occurs at a low, leaky level.......

Answer 2

Glucose present, lactose present: Low-level transcription of the lac operon occurs. The lac repressor is released from the operator because the inducer (allolactose) is present. ... Thus, CAP remains inactive and cannot bind to DNA, so transcription only occurs at a low, leaky level..