In this question we are examining a bacterial RNA polymerase that elongates at 20 codons per second. Question 1: How long will this RNA polymerase take to transcribe the Lac Z gene at 3510 base pairs?
My answer: A codon is 3 base pairs so I start by dividing 3510 by 3 and then by 20 to get 58,5 seconds.
Question 2: Your bacteria can produce a Lac Z mRNA about every other second. How can you explain this?
My answer: I am very lost on this one. I thought that the mRNA would be as long as the gene so wouldn't this be 58,5 seconds not roughly 2 seconds??