Question

.150
Mark the incorrect option w.r.t. lac operon
(1) Is under positive as well as negative control
(2xControls catabolic pathway
(3) Shows feed back repression
(4) Discovered by Jacob and Monod​

Answer 1

Answer:

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Answer 2

Lac operon doesn't show feedback repression due to the following reasons :

- Lac operon shows regulation with the help of two different proteins .

- Lac operon consists of promoter and repressor .

- Promoter activity is controls the expression of lac operon .

• It shows two types of control

(1) Negative control : Here protein prevents transcribing of RNA polymerase .

(2)Positive control : Here the protein enhances RNA polymerase binding to the promoter.

Hence , Option (3) is the incorrect answer