A: Operator gene is functional when it is not | vedclass

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(C) The Assertion is correct because the operator gene acts as a switch; when the repressor protein binds to it,transcription is blocked. When the rep

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Assertion is correct,but Reason is incorrect.

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(C) The Assertion is correct because the operator gene acts as a switch; when the repressor protein binds to it,transcription is blocked. When the repressor is absent or inactivated,the operator is free,allowing $RNA$ polymerase to transcribe the structural genes.The Reason is incorrect because the regulator gene produces a repressor protein,which can be either active or inactive depending on the operon type (inducible or repressible). It does not produce 'only active protein' that acts on the system; rather,the repressor's activity is modulated by inducers or corepressors.

$A$: Operator gene is functional when it is not blocked by repressor.
$R$: Regulator gene produces active protein only which acts on operon system in $E. coli$.

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$A$: Operator gene is functional when it is not blocked by repressor.$R$: Regulator gene produces active protein only which acts on operon system in $E. coli$.