Answer
A promoter is an upstream piece of DNA which identifies a functional gene to be transcribed and helps the transcription machinery land and transcribe it. It's like a book cover in how it identifies the gene's start or a landing pad for a helicopter since it shows where to go.
Work Step by Step
Review the definition of a promoter and look at Fig. 17.7 to see how where the promoter is found relative to the rest of the gene.
