Lac operon follows a trans-acting control mechanism.

Lac operon follows a trans-acting control mechanism. Correct Answer True

Regulatory sequences like the operator are called cis-acting elements, because they affect the expression of only linked genes on the same DNA molecule. On the other hand, protein like the repressor can affect the expression of genes located on the other hand; proteins like the repressor can affect the expression of genes located on the other chromosomes within the cell. The lac operon is an example of negative control because binding of the repressor blocks transcription.
Bissoy MCQ

Related Questions

The lac operon is found only in prokaryotes and consists of structural genes and a promoter and operator. Which of the following statements explains why we study the lac operon?
If there is an insertion mutation in the operator of the lac operon, the expression of the lac structural gene will be __________
A and B jointly owe Rs. one lac to C. A alone pays the whole amount to C. B not knowing the fact of payment by A pays Rs. one lac over again to C. Is C bound to repay Rs. one lac to B.
The lac operon is under positive control, a phenomenon called _________________