| I. Glucose or galactose may bind with the represser and inactivate it. |
| II. In the absence of lactose, the represser binds with the operator region. |
| III. The Z-gene codes for permease. |
| IV. This was elucidated by Francois Jacob and Jacques Monod. |
A) II and III
B) I and III
C) II and IV
D) I and ll
Correct Answer: C
Solution :
The correct statements about lac operon is that this was elucidated by Francois Jacob and Jacques Monod, in this lactose or allolactose binds with the represser and induces the lac operon system. In the absence of lactose, the represser binds with the operator region and the Z-genes in this codes for\[\beta -\]galactosidase.
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