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Which type of bond is responsible for holding the "backbone" of DNA together?

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Which type of bond is responsible for holding the "backbone" of DNA together-example-1

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Answer:

DNA is composed of two complementary strands oriented antiparallel to each other with the phosphodiester backbones on the exterior of the molecule. The nitrogenous bases of each strand face each other and complementary bases hydrogen bond to each other, stabilizing the double helix.

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