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DNA structure was discovered by?

AWatson and Crick
BMendel and Darwin
CPasteur and Koch
DFleming and Chain

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Correct Answer: A: Watson and Crick

Explanation: The correct answer is A: Watson and Crick. James Watson and Francis Crick discovered the double helix structure of DNA in 1953, using X-ray diffraction data from Rosalind Franklin. Their discovery revolutionized biology and genetics, earning them the 1962 Nobel Prize.

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