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Which of the following enzymes is used to remove the phosphate group from the 5' end of DNA molecule, leaving a free 5' hydroxyl group, so that it cannot be ligated to another DNA fragment?

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Important Questions on Biotechnology: Principles and Processes

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Who discovered the reverse transcriptase an enzyme used to synthesize complementary DNA (cDNA) by using mRNA as a template?
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Rejoining of vector molecules after restriction enzyme digestion can be avoided by using: