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Ethanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent.Contents.thanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent. Contents.
A nucleotide can be added to DNA polymerase only on a pre-existing 3â-OH group which requires a primer so that it may add to the nucleotide. The so called primers do contain DNA and RNA base. DNA has the base thymine while RNA has uracil as its base. nucleotide can be added to DNA polymerase only on a pre-existing 3â-OH group which requires a primer so that it may add to the nucleotide. The so called primers do contain DNA and RNA base. DNA has the base thymine while RNA has uracil as its base.