During initiation of transcription, which event involves RNA polymerase?

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Multiple Choice

During initiation of transcription, which event involves RNA polymerase?

Explanation:
Initiation of transcription centers on RNA polymerase recognizing and binding to the promoter. This binding is the first committed step, placing the polymerase at the start site and allowing it to unwind DNA and begin RNA synthesis. Splicing of introns happens after transcription and processing of the RNA. DNA methylation is a regulatory modification at the chromatin level, not an action performed by RNA polymerase during initiation. Export of mRNA occurs after transcription and processing, as a transport step out of the nucleus. Therefore, the event that directly involves RNA polymerase during initiation is its binding to the promoter.

Initiation of transcription centers on RNA polymerase recognizing and binding to the promoter. This binding is the first committed step, placing the polymerase at the start site and allowing it to unwind DNA and begin RNA synthesis. Splicing of introns happens after transcription and processing of the RNA. DNA methylation is a regulatory modification at the chromatin level, not an action performed by RNA polymerase during initiation. Export of mRNA occurs after transcription and processing, as a transport step out of the nucleus. Therefore, the event that directly involves RNA polymerase during initiation is its binding to the promoter.

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