Each DNA strand within the double helix is a long, linear molecule made of smaller units called nucleotides that form a chain. The chemical backbones of the double helix are made up of sugar and ...

The helix of DNA has a diameter of about two nanometers, and it twists full circle once every 3.5 nanometers or so, a distance of about 10 base pairs, which form the rungs of DNAs ladder [see box ...

The difficulty has to do with the structure of the familiar DNA double helix. It is the bases—thymine (T), adenine (A), cytosine (C) and guanine (G)—that store information in DNA.

The book is "The Secret of Life: Rosalind Franklin, James Watson, Francis Crick, and the Discovery of DNA's Double Helix." Howard Markel, always great to see you. Dr. Howard Markel: ...

It’s the most famous corkscrew in history. Now an electron microscope has captured the famous Watson-Crick double helix in all its glory, by imaging threads of DNA resting on a silicon bed of nails.

1953: James Watson and Francis Crick present their research in Nature, describing the architecture of the double helix, which forms the molecular structure of DNA. Although by then scientists ...

The DNA double-helix shape winds through a new park behind Huntsville's HudsonAlpha Institute for Biotechnology. The mile-long park and sidewalk will be the centerpiece of a biotech campus in ...

Still, if her image led Watson to realize DNA was a double helix, then Watson and Crick committed a faux-pas when they didn't cite Franklin in their landmark paper.

“Double Helix,” at Bay Street Theater, illuminates the British scientist’s contributions, which became the basis for James Watson and Francis Crick’s 1953 breakthrough.