AP BIOLOGY

Detailed explanation-1: -Taken in 1952, this image is the first X-ray picture of DNA, which led to the discovery of its molecular structure by Watson and Crick. Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule.

Detailed explanation-2: -British scientist Rosalind Franklin’s application of radiation science was truly historic. Her work with x-ray crystallography confirmed the double-helix structure of the DNA molecule.

Detailed explanation-3: -At King’s College London, Rosalind Franklin obtained images of DNA using X-ray crystallography, an idea first broached by Maurice Wilkins. Franklin’s images allowed James Watson and Francis Crick to create their famous two-strand, or double-helix, model.

Detailed explanation-4: -Maurice Wilkins and Rosalind Franklin had obtained high-resolution X-ray images of DNA fibers that suggested a helical, corkscrew-like shape.