Who first described the double-helix structure of DNA?

Answer 1

Basically, DNA was purified by a number of methods to the point that crystals formed, X-ray diffraction studies of these crystals provided the evidence that a double helix was the only geometric structure consistent with the diffraction "shadows: obtained.

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Answer 2

The double helix model became the accepted structure of DNA because it fit the experimental evidence, especially from X-ray crystallography of the DNA molecule.

Answer 3

James Watson and Francis Crick