The Backbone of the DNA Molecule is Formed by ________

Question

The backbone of the DNA molecule is formed by ________.
A) peptide bonds
B) ribose sugars
C) nitrogenous bases
D) phosphodiester bonds

Accepted Answer

The backbone of the DNA molecule is formed by phosphodiester bonds, which connect the sugar molecules and phosphate groups of adjacent nucleotides. Peptide bonds connect amino acids in proteins, ribose sugars are found in RNA, and nitrogenous bases are found in both DNA and RNA but do not form the backbone.