12th Class Biology Molecular basis of inheritance

  • question_answer 67)   A low level of expression of lac operon occurs at all the time. Can you explain the logic behind this phenomena.

    Answer:

                      In the complete absence of expression of lacoperon, permease will not be synthesized which is essential for transport of lactose from medium into the cells. And if lactose cannot be transported into the cell, then it cannot act as inducers. Hence, cannot relieve the lacoperon from its repressed state.

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