Question

Choose the correct answer from the alternatives given.
An operon is a

• A. Protein that suppresses gene expression
• B. Protein that accelerates gene expression
• C. Cluster of structural genes with related functions
• D. Gene that switches other genes on or off

Answer 1

The correct option is C Cluster of structural genes with related functions

An operon, in genetics, is a functioning unit of DNA containing a cluster of genes under the control of a single promoter. The promoters are the palindromic sequences that control the process of transcription. An operon can be inducible like lac operon or it can be inhibitor operon like trp operon.

So, the correct option is 'Cluster of structural genes with related functions'.