NEET 1995 · Class 12

Molecular Basis of Inheritance

The lac operon is an example of

  1. (A)repressible operon
  2. (B)overlapping genes
  3. (C)arabinose operon
  4. (D)inducible operon

The NCERT line that answers it

Verbatim line

In the presence of an inducer, such as lactose or allolactose, the repressor is inactivated by interaction with the inducer.

Chapter
Molecular Basis of Inheritance
Section
5.8.1 The Lac operon
Page
22
Words matched
44 of 44

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 states that the lac operon is regulated by an inducer, which is the defining characteristic of an inducible operon, directly matching option D.

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