Problem:
A eukaryotic gene has two introns and three exons. The first intron closest to the promoter is 157 bp long and the second, farthest from the promoter, is 236. The three exons, in sequence from closest to farthest from the promoter, are 213 bp, 180 bp and 423 bp respectively. Draw the structure you would obtain if you hybridized the template strand of the transcribed region of this gene and three hundred base pairs of additional flanking DNA at each end with the mRNA produced from this gene.
Can you estimate the size in amino acid residues of the protein coded for by this gene? Please justify you answer.