Watson and Crick crack the DNA double helix
On this day · 28 February 1953
On a single Saturday morning in Cambridge, two scientists worked out the twisted-ladder shape that encodes all life.
On 28 February 1953, in Cambridge’s Cavendish Laboratory, James Watson and Francis Crick finished puzzling out that DNA is a double helix — two strands winding around each other like a spiral staircase. By lunchtime Crick was reportedly telling drinkers at the Eagle pub that the pair had “found the secret of life.”
The whole point was the pairing: A always bonds to T, G to C, so each strand is a template to copy the other.
The insight leaned heavily on X-ray diffraction images produced by Rosalind Franklin and Maurice Wilkins at King’s College London. Franklin’s data was crucial, yet she received little public credit at the time, and she died in 1958 — before the 1962 Nobel Prize went to Watson, Crick, and Wilkins.
Their formal announcement came as a famously terse paper in Nature on 25 April 1953: roughly 800 words and a single figure, ending with the sly understatement that the structure suggested “a possible copying mechanism for the genetic material.”
Sources & references
2 referencesWell-established. Corroborated by 2 independent sources.
