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Molecular Basis of Inheritance question

2023 · Q23
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Molecular Basis of Inheritance question

2023 · Q23

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

Name the component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the operon.

  1. A
    Promotor
  2. B
    Regulator protein
  3. C
    Repressor protein
  4. D
    Inducer
View written solutionFree

Correct answer: C

The component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the operon is the Repressor protein. Repressor proteins are produced by a regulator gene and can bind to an operator site to block transcription of downstream structural genes.

Therefore, the correct answer is Option C : Repressor protein.

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