25 April 1953 (papers published) / Europe
DNA’s double helix emerges from models and evidence
Watson and Crick proposed a double-helix model. Diffraction research by Franklin, Gosling, Wilkins and colleagues, alongside chemical evidence, was indispensable.
The story
Nature published Watson and Crick’s model with experimental papers by Wilkins’s team and by Franklin and Gosling. X-ray measurements and chemical constraints supported the structure; it was not simply two people’s inspiration. Nor was 1953 the discovery of DNA itself. Complementary strands suggested a copying mechanism, but replication and the genetic code required further research.
Connections and context
A structural model needed agreement with measurements. This story also raises questions about data circulation, authorship and how accounts of breakthroughs acknowledge different forms of contribution.
Dates and precision
25 April 1953 (papers published) Documented date
Positioned by the documented year, month or day. Missing precision is not inferred.
Representative map location
Cambridge and London
The marker represents model-building in Cambridge; crucial diffraction work was performed at King’s College London.
Representative coordinates · 52.204°, 0.119°
A marker identifies one representative place, such as a manuscript collection, laboratory or observing site. It does not mean the work happened only there, or assign a shared discovery to one country.
Bibliography
- Franklin and Gosling’s 1953 paper and King’s College London archives
- Photo 51 and the discovery of DNA’s structure, King’s College London
- Watson and Crick: Molecular Structure of Nucleic Acids
- Rosalind Franklin: International Union of Crystallography
References are listed as plain bibliography titles. They support particular facts or context; a reference does not certify every interpretation in a story.