Sketch a schematic diagram of lac operon in switched on position. How is operon switched off? Explain.

Explanation

### Step-by-Step Solution

#### Step 1: Understand the Structure of the Lac Operon
The lac operon consists of several key components:
- **I gene**: This is the regulatory gene that codes for the repressor protein.
- **Promoter (P)**: This is the site where RNA polymerase binds to initiate transcription.
- **Operator (O)**: This is the segment where the repressor protein binds.
- **Structural genes (Z, Y, A)**: These genes code for proteins involved in lactose metabolism:
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