NEET 2012 · Class 12

Molecular Basis of Inheritance

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

  1. (A)The inducer
  2. (B)A terminator
  3. (C)A promoter
  4. (D)The structural gene

The NCERT line that answers it

Verbatim line

A transcription unit in DNA is defined primarily by the three regions in the DNA:

Chapter
Molecular Basis of Inheritance
Section
5.5.1 Transcription Unit
Page
12
Words matched
25 of 25

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly lists the three components of a transcription unit (promoter, structural gene, terminator), which directly excludes 'inducer' as a component, matching the MCQ's correct answer.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

Take the free 5-minute checkMore from this chapter

Question text is reproduced from the published NEET 2012 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.