Figure 1. Four different bonds (W, X, Y, and Z) in a DNA molecule
Figure 1 represents a segment of DNA. Radiation can damage the nucleotides in a DNA molecule. To repair some types of damage, a single nucleotide can be removed from a DNA molecule and replaced with an undamaged nucleotide. Which of the four labeled bonds in Figure 1 could be broken to remove and replace the cytosine nucleotide without affecting the biological information coded in the DNA molecule?
A. Bond X only
B. Bond W only
C. Bonds Y and Z at the same time
D. Bonds W and Z at the same time
