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The DNA backbone is resistant to cleavage, and both strands of the double-stranded structure store the same biological information.This information is replicated as and when the two strands separate.Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix.The two DNA strands are termed polynucleotides since they are composed of simpler monomer units called nucleotides.RNA strands are created using DNA strands as a template in a process called transcription.The nitrogenous bases of the two separate polynucleotide strands are bound together (according to base pairing rules (A with T, and C with G) with hydrogen bonds to make double-stranded DNA.The total amount of related DNA base pairs on Earth is estimated at 5.0 x 10 DNA stores biological information.DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.

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Attached to each sugar is one of four types of nucleobases (informally, bases).

It is the sequence of these four nucleobases along the backbone that encodes biological information.

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