Assume a eukaryotic gene contains three exons.

a. Draw a diagram of this gene (template and coding strand) and the pre-mRNA and mRNA derived from it.

b. Include in your diagrams and give a brief description of the function of each of the following: promoter, AAUAAA consensus sequence, transcription start site, introns, exons, poly(A) tail, 5′ cap, 5′ and 3′ ends of each strand.