If a silent mutation occurs in the lac z gene of the lac operon in E.coli:

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There is no synthesis of β galactosidase but transacetylase and permease are synthesized

Synthesis of all enzymes is stopped

Synthesis of β galactosidase, transacetylase and permease continues unhindered.

Repressor molecule cannot bind to operator even in absence of lactose

answer is C.

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Detailed Solution

A silent mutation is a change in the sequence of nucleotide bases which constitutes DNA, without a subsequent change in the amino acid or the function of the overall protein. Therefore, if a silent mutation occurs in the lac z gene of the lac operon in E.coli synthesis of β galactosidase, transacetylase and permease continues unhindered

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