Question

What is the work of the sigma factor in transcription?

• A. Helicase action
• B. Transcription initiation
• C. Transcription elongation
• D. Transcription termination

Answer 1

Answer:

B. Transcription initiation

Sigma factor is only involved in transcription initiation not in elongation. The sigma factor is released from the core enzyme when the transcript reaches more than 8-9 nucleotide.