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Question

The double-helix model of DNA structure was first proposed by ________.

A
Watson and Crick
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B
Rosalind Franklin
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C
Emil Fischer
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D
Khorana
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Solution

The correct option is A Watson and Crick
The double-helix model of DNA structure was first published in the journal Nature by James Watson and Francis Crick in 1953, based upon the crucial X-ray diffraction image of DNA labeled as "Photo 51", from Rosalind Franklin in 1952. A more clarified DNA image was published later by Rosalind Franklin along with many others and base-pairing chemical and biochemical information provided by Erwin Chargaff.

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