Topic: Processes of recombinant DNA technology· Biotechnology and Its Applications

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

1. RNA

2. DNA

3. Histones

4. Polysaccharides

Doubtly Asked 30 Oct 2026 NEET UG 2023 NEET UG 2021 Practice test neet Save WhatsApp Report

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Answer: 2. DNA

DNA is insoluble in ethanol. When chilled ethanol is added to the purified lysate, DNA precipitates and appears as fine threads that can be spooled out. RNA, histones and polysaccharides are removed earlier with RNase, protease and other treatments.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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

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