They solved the secret of life. But another scientist's work made it possible — and she never received credit.

The Double Helix: Unlocking the Secret of Life

Watson and Crick decode DNA — and credit the woman whose work they used

Watson and Crick's 1953 paper revealing DNA's double helix structure solved the mystery of heredity — based partly on Rosalind Franklin's X-ray data without her knowledge.

On April 25, 1953, Nature published a 900-word paper by James Watson and Francis Crick proposing the double-helix structure of DNA. Accompanied by a simple diagram, the paper modestly noted that the structure "suggests a possible copying mechanism for the genetic material."

The understatement was epic. DNA's double helix — two strands of nucleotides wound around each other in a spiral, held together by complementary base pairs — perfectly explained how genetic information could be copied, stored, and transmitted from parent to offspring. It was one of science's greatest achievements.

Behind the discovery lay a complicated story. X-ray crystallographer Rosalind Franklin had produced an image called Photo 51 — the clearest X-ray diffraction image of DNA ever taken. Her colleague Maurice Wilkins showed this image to Watson without her knowledge or permission. Watson and Crick, who had also accessed her unpublished data through other channels, used it as crucial evidence for their model.

Franklin died of cancer in 1958, four years before Watson, Crick, and Wilkins received the Nobel Prize for the discovery. Nobel Prizes are not awarded posthumously, but most historians believe she d…

💡 The paper was exactly 900 words and is one of the most cited papers in scientific history. Watson and Crick wrote it in six weeks.