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NEET Biology question

BiologyBiotechnology: Principles and ProcessesNEET

Read the following statements and select the correct ones. 1. The same kind of sticky ends are produced when a DNA has been cut by different restriction enzymes. 2. Exonucleases make cuts at specific positions within the DNA. 3. HindII was the first restriction endonuclease to be isolated. 4. A bacteriophage has the ability to replicate within bacterial cells by integrating its DNA with bacterial DNA. 5. DNA fragments move towards the cathode under an electric field through a medium.

Answer: (C)

Solution

Statement 1 is false since different restriction enzymes generally recognize different sequences and so generally do not produce matching sticky ends, statement 2 is false because it describes the action of endonucleases (which cut at specific internal positions) rather than exonucleases

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Question ID VK-125234