DNA synthesis can be specifically measured by estimating the composition of radio labelled

Uracil

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Adenine

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Thymidine

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Deoxyribose sugar

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Solution

The correct option is C Thymidine
Autoradiography is the study of labeled precursors like ³H by knowing the movement of radioactivity with the help of photographic films and emulsions at short intervals. Radioactive material like titrated thymidine which is formed by replacing normal hydrogen of thymidine with ³H (tritium). Thymidine only is used for this purpose because RNA will not be labeled by this.
So, the correct answer is 'Thymidine'

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