Q.

In recombinant DNA technology, chilled ethanol is used for-

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a

Precipitation of DNA

b

Digestion of DNA

c

Removal of proteins

d

Visualization of DNA fragments

answer is A.

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Detailed Solution

Inside the cell, DNA is present along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. Molecules other than DNA can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.
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