A. Hydrogen bond
B. Ionic bond
C. Covalent bond
D. Peptide bond
Answer: Covalent bond
A. Hydrogen bond
B. Ionic bond
C. Covalent bond
D. Peptide bond
Answer: Covalent bond
Additional Information: Covalent bonds connect the sugar and phosphate groups in a DNA strand, forming the backbone of the molecule.
Subjects: Biochemistry, Biology