The nucleotides in the backbone of DNA are held together by ________ bonds.
A)hydrogen
B)peptide
C)phosphodiester
D)glycosidic
E)ionic

Question

Quizplus · Accepted Answer

The backbone of DNA is made up of repeating units of sugar (deoxyribose) and phosphate groups with the nitrogenous bases extending out from it. The bond between the phosphate and the sugar is a phosphodiester bond which involves linking the phosphate group to the 3′ carbon on one sugar molecule and the 5′ carbon on the adjacent sugar molecule. This bond creates a repeating sugar-phosphate backbone that provides structural stability to the DNA double helix.

The Nucleotides in the Backbone of DNA Are Held Together