A low level of expression of lac operon | Class 12 Biology Chapter Molecular Basis of Inheritance, Molecular Basis of Inheritance NCERT Solutions

Question:

A low level of expression of lac operon occurs at all the time. Can you explain the logic behind this phenomena.

Answer:

In complete absence of expression of lac operon, permease will not be synthesized which is essential for the transport of lactose from medium into the cells. And, lactose acts as inducer when it cannot be transported into the cell. Hence, cannot relieve the lac operon from its repressed state.   


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Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 14: A low level of expression of lac operon occurs at all the time. Can you explain the logic behind thi....