Which enzyme will be produced in a cell if th | vedclass

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(c) : A nonsense mutation is the one which stops polypeptide synthesis due to the formation of termination or non&shy;sense codon. In lac operon, sequ

Vedclass · Accepted Answer

$\beta$-&shy;galactosidase

Vedclass · Answer

(c) : A nonsense mutation is the one which stops polypeptide synthesis due to the formation of termination or non&shy;sense codon. In lac operon, sequence of structural genes is $Z, Y$, and $A$, which respectively code for $\beta$-&shy;galactosidase, lactose permease and transacetylase. If the gene $Y$ has nonsense mutation, gene expression will stop at it, resulting in non&shy;expression of both gene $Y$ and successive gene $A$. Thus, only $\beta$-&shy;galactosidase enzyme will be produced.

Which enzyme will be produced in a cell if there is a nonsense mutation in the lac $Y$ gene?

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