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Transcription and Regulation - Medical Science

Q1:

The function of the sigma factor of RNA polymerase is to

A assure that transcription begins at the proper point

B assure that transcription ends at the proper point

C assure that translation begins at the proper point

D assure that translation ends at the proper point

ANS:A - assure that transcription begins at the proper point

Sigma is subunite of rna polymeras, which recognize the promoter and help in transcription initiation.