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  4. DNA synthesis can be specifically measured by estimating the incorporation of radio-labeled :

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Q. DNA synthesis can be specifically measured by estimating the incorporation of radio-labeled :

Haryana PMTHaryana PMT 2000

Solution:

Autoradiography is the study of labeled precursors like $3 H$ 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.