Which one of the following acts as an inducer for lac operon?

Which one of the following acts as an inducer for lac operon?
  1. Glucose
  2. Galactose
  3. Sucrose
  4. Lactose

Solution

Lactose acts as inducer of lac operon. Lactose binds with repressor protein and inactivates it allowing the expression of structural genes.

Asked in: NEET 2023 (Manipur)

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