Question

this is the structure of dna as first published by James Watson and Francis Crick in 1953

Answer 1

In 1953, James Watson and Francis Crick announced that they have discovered that DNA has the shape of a double-helix.

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Answer 2

Watson and Crick first discovered the structure of the DNA molecule. The structure was described as having a double helical structure. The structure is composed of molecules or bases called nucleotides. The structure was found to have 4 basic nucleotides or base pairs. They are namely adenine, guanine, cytosine and thymine.