NEET 2023 · Class 12

Biotechnology: Principles and Processes

During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out

  1. (A)DNA
  2. (B)Histones
  3. (C)Polysaccharides
  4. (D)RNA

The NCERT line that answers it

Verbatim line

Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.

Chapter
Biotechnology: Principles and Processes
Section
9.3.1 Isolation of the Genetic Material (DNA)
Page
10
Words matched
20 of 20

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'purified DNA ultimately precipitates out after the addition of chilled ethanol,' which directly and conclusively identifies DNA as the substance precipitated by chilled ethanol, matching the correct answer.

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Question text is reproduced from the published NEET 2023 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.