What best describes how the transcription of eukaryotic mRNA is regulated? A. ge

Question

What best describes how the transcription of eukaryotic mRNA is regulated?

A. genes are turned off by gene-specific repressor proteins which sit at the operator site till they are removed when an effector molecule binds to them

B. transcription factors bind at sites at or near the gene promoter and promote transcription.

C. sigma factors bind to the polymerase and guide it to the promoter

D. a primer is made by primase which is elongated by DNA polymerase

E. polycistronic mRNAs are controlled by operons

Explanation / Answer

C. sigma factors bind to the polymerase and guide it to the promoter

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