Question

In E. coli, a DNA sequence that specifies where RNA polymerase will bind and initiate transcription of a gene is:

• A. Start codon
• B. Stop codon
• C. Terminator
• D. Promoter

Hint:

Remember — the promoter is the region on DNA where RNA polymerase binds to start transcription.

Answer 1

The Correct Option is D

In E. coli, the promoter is a specific DNA sequence located upstream of a gene that serves as a binding site for RNA polymerase. It marks the site where transcription should begin. The start codon signals where translation starts, the stop codon marks where translation ends, and the terminator signals the end of transcription, but none of these initiate transcription like the promoter does.