Question

Which one of the following is NOT a structural part of a transcription unit in DNA?

विकल्प

• Promoter

• Structural gene

• Terminator

• Inducer

Answer 1

Inducer

Explanation:

A standard transcription unit in DNA consists of three functional regions: a promoter (where RNA polymerase binds), a structural gene (the actual sequence being copied), and a terminator (where transcription ends).

An inducer is not a part of the DNA sequence itself; rather, it is a molecule (like lactose) that interacts with a repressor protein to initiate the transcription process.