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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance2 Marks
Question
  1. Name the molecule 'M' that binds with the operator.
  2. Mention the consequences of such binding.
  3. What will prevent the binding of the molecule 'M' with the operator gene? Mention the event that follows.
✓

Answer

  1. M is the repressor.
  2. When the repressor binds to the operator, transcription of structural genes by RNA-polymerase is prevented.
  3.  
  1. An inducer can prevent the binding of repressor to operator.
  2. Consequently, the RNA-polymerase gets access to the promoter and transcription proceeds.

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