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?