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[[Image:763.jpg|right|thumb]]
The '''Double helix''' is the structural arrangement of [[DNA]], which looks something like an immensely long ladder twisted into a helix, or coil. The sides of the "ladder" are formed by a backbone of sugar and phosphate molecules, and the "rungs" consist of [[nucleotide base]]s joined weakly in the middle by [[hydrogen bond]]s.
The '''Double helix''' is the structural arrangement of [[DNA]], which looks something like an immensely long ladder twisted into a helix, or coil. The sides of the "ladder" are formed by a backbone of sugar and phosphate molecules, and the "rungs" consist of [[nucleotide base]]s joined weakly in the middle by [[hydrogen bond]]s.