Define DNA spooling...?

DNA spooling is a method of obtaining DNA in a form of spool over a glass rod at the last step of DNA extraction. During isolation of DNA when ethanol is added at last step to precipitate purified DNA then the DNA can be spooled on A glass rod. This is done by inserting a thin glass rod in the tube having purified DNA, the glass rod is gently rotated with the help of fingers and DNA get adhered to it forming a spool. 

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