![The process of DNA extraction is necessary to isolate molecules of DNA from cells or tissues. A …[Credits : Dr. Dominik Refardt/University of Basel, Switzerland.]](http://media-2.web.britannica.com/eb-media/14/101714-004-D1894B19.jpg)
The process of DNA extraction is necessary to isolate molecules of DNA from cells or tissues. A series of steps, including the use of protease enzymes to strip proteins from the DNA, are required for isolating pure DNA that is suitable for use in later procedures, such as cloning or sequencing.
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