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Which chemical is used to obtain a precipitate of pure DNA?(a) Methanol(b) Ether(c) HCl(d) EthanolI got this question in an international level competition.My question comes from Biotechnology in chapter Biotechnology Principles and Processes of Biology – Class 12

Answer»

The correct answer is (d) Ethanol

Best explanation: Ethanol is USED to obtain the precipitate of PURE DNA. It’s used in CONCENTRATING and de-salting of NUCLEIC ACIDS. It makes the nucleic acid less hydrophilic thus easing their extraction.



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