Question


  1. Name the molecule ‘X’ synthesised by ‘i’ gene, How does this’ molecule get inactivated?
  2. Which one of the structural genes codes for β-galactosidase?
  3. When will the’ transcription of this gene stop?

Answer

  1. Repressor Lactose (inducer) binds with the repressor molecule.
  2. Z gene.
  3. When all the lactose molecules are consumed/repressor becomes free to bind with operator.

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