A: Sigma factor of RNA polymerase recognizes | vedclass

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Question

(C) $1$. The Assertion is correct: In prokaryotes, the $RNA$ polymerase enzyme consists of a core enzyme and a sigma ($\sigma$) factor. The sigma fact

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Assertion is correct, but Reason is incorrect.

Vedclass · Answer

(C) $1$. The Assertion is correct: In prokaryotes, the $RNA$ polymerase enzyme consists of a core enzyme and a sigma ($\sigma$) factor. The sigma factor specifically recognizes the promoter site and initiates transcription.$2$. The Reason is incorrect: The promoter region is defined with respect to the coding strand. It is located at the $5'$ end of the coding strand (upstream), not the template strand. Therefore, the statement in the Reason is scientifically inaccurate.

$A$: Sigma factor of $RNA$ polymerase recognizes the start signal region in prokaryotes.
$R$: Promoter region lies at $5'$ end of the coding strand, not the template strand.

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$A$: Sigma factor of $RNA$ polymerase recognizes the start signal region in prokaryotes.$R$: Promoter region lies at $5'$ end of the coding strand, not the template strand.