Solutions For An Introduction to Genetic Analysis Chapter 17 Problem 14P

In the above figure, we see that the promoters of genes B and C have their direction changed. In the normal sequence, the promoters of genes B, C and, D are facing the end. In the last panel, we see that the direction of the promoters of genes B and C are present differently.

This difference in orientation will affect their functionality. The promoter is usually present upstream of the genes they regulate. They are present upstream can be present at some distance from the gene. This change will affect the reading frame for the RNA polymerase enzyme.