Question

Why ethanol is used to precipitate dna and not any other alchol?

Answer 1

Here Is Your Answer ⬇

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➡DNA is polar due to its highly charged phosphate backbone. Its polarity makes it water-soluble or water is polar (principle of ‘like dissolves like’)

Ethanol has both polar and non-polar parts. C2H5 is non-polar and -OH part is polar.

And thus, ethanol can dissolve both polar (hydrophilic) and non-polar (hydrophobic) molecules. That's why ethanol is used to precipited DNA and not any other alcohol

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