In Operon concept, regulator gene functions as
Repressor
Regulator
Inhibitor
All of these
$A$ : 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
Match List $-I$ with List $-II$ :
List $-I$ | List $-II$ |
$a$ In lac operon $i$ gene codes for | $i$ transacetylase |
$b$ In lac operon $z$ gene codes for | $ii$ permease |
$c$ In lac operon $y$ gene codes for | $iii$ $\beta$ - galactosidase |
$d$ In lac operon $a$ gene codes for | $iv$ Repressor |
Choose the correct answer from the options given below :
In the medium where $E$. coli was growing, lactose was added, which induced the lac operon. Then, why does lac operon shut down some time after addition of lactose in the medium?
The regulatory genes are located
In the lac operon, the structural genes are switched off when