30. Use Figure 2 to answer the question. The model shown in Figure 2 can bost be used to explain the answer to which
question?

A. Why did some individuals develop the mutation that disrupts a working
enhancer?
B. When a working enhancer binds to a gene, does it affect the amount of
protein that can be produced?
C. What happens when an activator protein binds to the working enhancer in a
strand of DNA?
D. When a coding region of a gene becomes inactive, is the deactivation of the
enhancer proteins the only cause?