<prompt> Two strands of DNA isare held by:Glycosidic bondHydrogen bondCovalent bondIonic bond  <response>: Answer b hydrogen bond The two strands are held together by hydrogen bond formed by complementary base pairs Satyanarayan 4th75The base pairs are held together by hydrogen bonds: two between A and T and three between G and C. These hydrogen bonds, plus the hydrophobic interactions between the stacked bases, stabilize the structure of the double helix. 