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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance2 Marks
Question
Study the figure given below and answer the questions:
  1. How does the repressor molecule get inactivated?
  2. When does the transcription of lac mRNA stop?
  3. Name the enzyme transcribed by the gene ‘Z’.
✓

Answer

  1. Binding of inducer/lactose to the repressor.
  2. In the absence of inducer lactose/when repressor binds with the operator.
  3. ß - galactosidase.

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