In the $lac$ operon,the structural genes are switched off when:
- ARepressor binds to operator
- BRepressor binds to promoter
- CRepressor binds to regulator
- DRepressor binds to inducer
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Similar Questions
Given below is the representation of the $lac$ operon of $E. coli$. Identify $I$ and $II$ from the options given below.
$I$
Promoter
$II$
$Z$
$Y$
$A$
| $I$ | Promoter | $II$ | $Z$ | $Y$ | $A$ |
$Y$ gene in $lac$ operon is responsible for .....
Easy
View Solution$A$: Operator gene is functional when it is not blocked by repressor.
$R$: Regulator gene produces active protein only which acts on operon system in $E. coli$.
$R$: Regulator gene produces active protein only which acts on operon system in $E. coli$.
Medium
View SolutionThe activity of structural genes is controlled by.....
Medium
View SolutionThe functional complex that consists of a cluster of genes including structural genes,a promoter gene,an operator gene,and a regulator gene was discovered by:
Medium
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