At which London college did Rosalind Franklin work on DNA?

Rosalind Franklin worked on DNA at King's College London. She joined the college in January 1951, where she used X-ray crystallography to investigate the molecule's structure.

At King's, Franklin worked in John Randall's biophysics laboratory and studied both the A and B forms of DNA. Her experiments showed that DNA could adopt different structures depending on its hydration and helped establish that the phosphate backbone lies on the outside of the molecule.

Franklin's time at King's is closely linked with the famous DNA image known as Photo 51. The photograph was taken by her doctoral student Raymond Gosling under her supervision and provided important evidence that DNA had a helical structure. Franklin later moved to Birkbeck College in London, where she conducted important research on viruses, including tobacco mosaic virus.

A common mix-up is confusing King's College London with the University of Cambridge, where Franklin studied and completed her doctoral work. Cambridge was part of her education, while King's was the London college where she carried out her best-known DNA research.