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Structure of DNA DNA is the code for life, the key to unlocking this code lies in the structure of DNA. Many different people have been involved in the discovery of the structure of DNA, and many different ideas have been discussed. Francis Crick and James Watson have made a momentous discovery about the structure of DNA, but where did their ideas originate and where will they lead? Early ideas about DNA came in 1951 from Rosalind Franklin who was an X-ray crystallographer. She suggested that DNA had a helical structure and that the phosphate groups of the nucleic acids were positioned on the outside of the chain. She also thought that each helical unit had 2,3 or 4 nucleic acid chains. In 1951/1952 Francis Crick an English physicist and James Watson an American biologist began their work to discover the structure of DNA. They set about finding how many polynucleotide chains were...

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