AP BIOLOGY

Detailed explanation-1: -At King’s College London, Rosalind Franklin obtained images of DNA using X-ray crystallography, an idea first broached by Maurice Wilkins.

Detailed explanation-2: -Maurice Wilkins and Rosalind Franklin had obtained high-resolution X-ray images of DNA fibers that suggested a helical, corkscrew-like shape.

Detailed explanation-3: -At King’s College in London, Rosalind Franklin and Maurice Wilkins were studying DNA. Wilkins and Franklin used X-ray diffraction as their main tool–beaming X-rays through the molecule yielded a shadow picture of the molecule’s structure, by how the X-rays bounced off its component parts.

Detailed explanation-4: -Scientists James Watson and Francis Crick were famously the first to work out the structure of DNA, and Rosalind Franklin and Maurice Wilkins are often credited for capturing the images of the molecule that made this possible.

Detailed explanation-5: -In 1950 Maurice and his graduate student Raymond Gosling obtained the first X-ray photographs of DNA that showed that the long, thin molecule had a regular, crystalline form. It was one of these photographs, shown at a meeting in Naples a year later that sparked James Watson’s interest in DNA.