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Question

Watson and Crick constructed the double helical model of DNA based on images developed by Rosalind Franklin through _______________ technique.


A

X-ray diffraction

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B

Autoradiography

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C

Electrophoresis

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D

Chromatography

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Solution

The correct option is A

X-ray diffraction


Rosalind Franklin, a young biophysicist, was working on the structure of DNA around the same time as Watson and Crick. While they initially came up with a triple helical structure, she already had a strong clue that DNA is a double helix, through the images that she had developed through X-ray diffraction. Unfortunately, she wasn’t alive to share the Nobel Prize with them in the year 1962.


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