Why is isopropanol used in DNA extraction?

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Solution

Isopropanol in DNA extraction:
Isopropyl alcohol is a colourless, flammable, and pungent chemical substance.
The purpose of salt and ethanol/isopropanol is to precipitate DNA from a solution.
The salts neutralize the negatively charged phosphate in DNA's negative charge, while the isopropanol/ethanol removes the phosphate's H₂O hydration shell.

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