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Biology · PYQ NEET UG 2026

हिन्दी

Which of the following statements about lac-operon is correct?

  1. Gene $i$ is constitutively expressed
  2. Lactose activates repressor to bind to the operator
  3. Genes $i$, $z$, $y$ and $a$ share single common promoter
  4. Galactose can act as an inducer of lac operon

Correct answer · Option 1

Gene $i$ is constitutively expressed

Explanation

The 'i' gene in lac operon synthesizes the repressor protein constitutively.

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