Exactly 66 years ago, on April 25, 1953, Francis Crick and James Watson published their famous article that showed that the shape of DNA is a double helix. They weren’t able to see DNA directly – it’s much too small for that – but came to their conclusion based on calculations and X-ray diffraction images. A crucial piece of information came from the famous “Photo 51”, an X-ray image of DNA taken by Rosalind Franklin.
What Does DNA Look Like? After 66 Years, We’re Still Learning More.
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