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Biology · Principles and Processes in Biotechnology

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The ultimate precipitation of purified DNA as fine threads during genetic material isolation is achieved by adding:

  1. Chilled ethanol
  2. Concentrated hydrochloric acid
  3. Warm isopropanol
  4. Liquid nitrogen

Correct answer · Option 1

Chilled ethanol

Explanation

Addition of chilled ethanol causes purified DNA to precipitate out as fine threads, which can be removed by spooling.

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