On February 28, 1953, James Watson and Francis Crick informally announced that they had discovered the double-helical structure of DNA. They soon reported their find more formally. On April 25, 1953, ...
Diagrams: Short section of DNA, 1951 -- Chemical structures of the DNA bases, 1951 -- Covalent bonds of the sugar-phosphate backbone -- Schematic view of a nucleotide -- Mg** ions binding phosphate ...
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