The two strands of a double helix model of DNA are held together by hydrogen bonds between a. Sugar and phosphate groups b. Sugar and nitrogenous bases c. Phosphate groups and nitrogenous bases d. Nitrogenous bases
Option D The two strands of the double helix of DNA are linked together by hydrogen bonds between nitrogenous bases. The bases, Adenine is bonded to Thymine by two H Bonds while Guanine and Cytosine are bonded by three H-Bonds.
