Q. Which one of the following is not a part of a transcription unit in DNA ?
A) The structural gene
B) The inducer
C) A terminator
D) A promoter
Explanation
[Solution from source] A transcription unit consists of a promoter, a structural gene and a terminator. An inducer (such as lactose in the lac operon) is a small molecule that regulates expression; it is not a stretch of DNA. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.