The type of bond connecting two nucleotides is

Step-by-step solution

DNA is the chain of a polynucleotide, which are joined by the phosphodiester bonds. The two nucleotides are linked by the phosphodiester bond. Phosphodiester bonds are strong covalent bonds between phosphate groups connecting the 5 ' - carbon of one deoxyribose to the 3 ' - carbon of the next deoxyribose of the adjacent nucleotide.