Define an operon, giving an example, explain an inducible operon.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of an Operon:**
An operon is a functional unit of genomic DNA that consists of a cluster of genes under the control of a single promoter. It is a regulatory mechanism in prokaryotic cells that allows for the coordinated expression of genes that are involved in a related function.

2. **Components of an Operon:**
An operon typically has three main components:
- **Promoter:** This is a nucleotide sequence that initiates transcription of the genes in the operon.
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