Rosalind Franklin Understood DNA's Structure Before Watson, New Analysis of Photograph 49 Reveals
Despite what Watson said, Rosalind Franklin understood structure of DNA first
A historian and an X-ray crystallographer argue that Franklin's Photograph 51 was not a missed opportunity but a deliberate reproduction of her earlier Photograph 49, which she had already used to calculate key helical parameters of DNA's B form. They contend that Watson's narrative erased her skill and judgment by suggesting the image spoke for itself only to him.
We write here to contend that Photograph 51 shouted "helix" so clearly because Rosalind Franklin intended it to do so.