Which of the following best describes the role of sigma factor in RNA synthesis?
A) Sigma factor is essential for elongation.
B) Sigma factor is responsible for the recognition of specific initiation sites on a DNA template.
C) Sigma factor is responsible for separation of DNA strands.
D) Sigma factor is responsible for releasing the completed chain.

Question

Quizplus · Accepted Answer

Sigma factor is responsible for recognizing specific initiation sites on a DNA template and binding to the RNA polymerase complex to initiate transcription. It helps to ensure that the correct genes are transcribed and prevents non-specific transcription from occurring. Sigma factor is not responsible for elongation, separation of DNA strands or releasing the completed chain.

Which of the Following Best Describes the Role of Sigma