Helix, double

The structure of DNA with the two strands of DNA spiraling about one other. The double helix 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 bases joined weakly in the middle by hydrogen bonds. "The Double Helix" is the title of a excellent book by James Watson telling the story of his and Francis Crick's discovery of the correct model for DNA.

Medical dictionary. 2011.

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  • Double helix (disambiguation) — In geometry, a double helix (plural double helices) is a pair of congruent geometrical helices with the same axis, differing by a translation along the axis. The term is most often used in reference to the nucleic acid double helix, the dominant… …   Wikipedia

  • double helix — noun a pair of parallel helices intertwined about a common axis the shape of the DNA molecule is a double helix • Hypernyms: ↑helix, ↑spiral * * * noun, pl ⋯ helices also ⋯ helixes [count] technical : the shape formed by two parallel lines that… …   Useful english dictionary

  • helix — 1. [NA] The margin of the auricle; a folded rim of cartilage forming the upper part of the anterior, the superior, and the greater part of the posterior edges of the auricle. 2. A line in the shape of a coil (or a spring, or the threads on a bo …   Medical dictionary

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  • Double Helix (novel) — Double Helix (2004), a novel by Nancy Werlin, is about 18 year old Eli Samuels, who works for a famous molecular biologist named Dr. Quincy Wyatt. There is a mysterious connection between Dr. Wyatt and Eli’s parents, and all Eli knows about the… …   Wikipedia

  • Double Helix Games — Год основания 2007 Расположение …   Википедия

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