A specific sequence of DNA in a transcription unit provides the binding site for RNA polymerase. The presence of this sequence also defines the template and coding strands. Identify this region and its conventional location.

Step-by-step solution

The promoter is a DNA sequence that provides a binding site for RNA polymerase. It is the presence of the promoter in a transcription unit that defines the template and coding strands. By convention, the reference for defining the ends of a transcription unit is made with respect to the polarity of the coding strand. The promoter is located towards the 5'-end (upstream) of the structural gene with respect to the coding strand. The terminator is located towards the 3'-end (downstream) of the coding strand. The opera