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The enzyme that joins two DNA fragments end to end is DNA:

ALaccase
BLigase
CLipase
DLactase
Answer & Solution
Correct answer: B. Ligase
1. After cutting, the pieces must be sealed together. 2. One enzyme forms that bond. 3. It is DNA ligase. _Source: syllabus Biology Class XII, Chapter 11, Biotechnology Principles and Processes._
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