Maurice Wilkins

Maurice Hugh Frederick Wilkins (15 December 1916 – 5 October 2004) was a New Zealand-born British biophysicist and Nobel laureate whose research spanned multiple areas of physics and biophysics, contributing to the scientific understanding of phosphorescence, isotope separation, optical microscopy, and X-ray diffraction. He is most noted for initiating and leading early X-ray diffraction studies on DNA at King's College London, and for his pivotal role in enabling the discovery of the double helix structure of DNA.

Wilkins began investigating nucleic acids in 1948. By 1950, he and his team had produced some of the first high-quality X-ray diffraction images of DNA fibers. He presented this work in 1951 at a conference in Naples, where it significantly influenced James Watson, prompting Watson to pursue DNA structure research with Francis Crick.

In 1951, Rosalind Franklin joined King’s College and was assigned to the same DNA project, though without a clear delineation of leadership. Tensions developed due to overlapping roles and lack of administrative clarity. During this period, Franklin and graduate student Raymond Gosling captured the high-resolution Photo 51, a diffraction image of B-form DNA. In early 1953, John Randall instructed Gosling to hand it over to Wilkins. Wilkins, in turn, showed it to Watson—without Franklin's consent. This action has been the subject of significant ethical and historiographical debate.

Using insights from Photo 51 and prior data—including Wilkins' own diffraction studies—Watson and Crick constructed their double helix model in March 1953. Wilkins simultaneously continued experimental validation, producing confirmatory diffraction images published in the same issue of Nature.

Wilkins' contributions were not limited to verification. He had led the DNA diffraction research at King’s before Franklin’s arrival, initiated the methods that led to Photo 51, and played a central role in sharing data and coordinating the laboratory’s DNA efforts—roles often underrepresented in historical summaries.

In later years, Wilkins extended his studies to RNA structure and worked on the biological effects of radiation.