The alcohol causes the DNA to precipitate. This is because DNA does not dissolves in alcohol and as alcohol is lighter than the filtrate, DNA thus can be seen.Alcohol is used to preserve the DNA, enabling it to last foe years in a tightly sealed container. Alcohol is bacteria free and thus DNA can continue to survive. This might help it last to the future where you can perhaps use the DNA for cloning!
Use of alcohol
Friday, 5 August 2011 | By Ken and choon han
The alcohol causes the DNA to precipitate. This is because DNA does not dissolves in alcohol and as alcohol is lighter than the filtrate, DNA thus can be seen.Alcohol is used to preserve the DNA, enabling it to last foe years in a tightly sealed container. Alcohol is bacteria free and thus DNA can continue to survive. This might help it last to the future where you can perhaps use the DNA for cloning!
DNA model structure
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