B-DNA Has 10

Multiple Choice

B-DNA has 10.5 base pairs per turn, while Z-DNA has 12 base pairs per turn. What will be the effect on a plasmid where 24 base pairs switch from the B to the Z form?

A) The linking number will decrease by 2.
B) The writhe will decrease by approximately 2.
C) The twist will increase by approximately 4.
D) The writhe will increase by approximately 4.
E) The writhe will decrease by approximately 2, and the twist will increase by approximately 4.