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It is commonly referred to as the gene for baldness or the gene for blue eyes. In 1953, James Watson and Francis Crick established the structure of DNA. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. The sugar is deoxyribose. Color all the phosphates red (labeled with a p).
James Watson and Francis Crick explain how they solved the structure of DNA. I'm James Watson. I'm Francis Crick. In 1953, Francis and I published the first accurate model of the DNA molecule. We were interested in DNA â the hereditary molecule of life. We wanted to build on what was chemically known about DNA, and determine its actual structure.