Which enzyme will be produced in a cell if there is a nonsense mutation in the lac $Y$ gene?
Transacetylase
Lactose permease and transacetylase
$\beta$-galactosidase
Lactose permease
Functioning of structural genes is controlled by
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 :
The lactose present in the growth medium of bacteria is transported to the cell by the action of
In lac operon, $z$ gene codes for:
In Operon concept, the regulator gene regulates chemical reactions in the cell by