General Design of an rDNA experiment Past Year (2006 - 2015) MCQs Biotechnology: Principles and Processes Zoology NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

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During the process of isolation of DNA, chilled ethanol is added to:
1. Precipitate DNA
2. Break open the cell to release DNA
3. Facilitate action of restriction enzymes
4. Remove proteins such as histones

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