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In a mixture, DNA fragments are separated by

(1) Polymerase chain reaction

(2) Bioprocess engineering

(3) Restriction digestion

(4) Electrophoresis
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Biotechnology :principles and processes

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Ans: (4) Electrophoresis

Sol. The correct answer is option (4) as DNA fragments can be separated by a technique known as gel electrophoresis. 

Polymerase chain reaction is used to amplify nucleic acids. 

Bioprocess engineering comprises maintenance of sterile ambience in chemical engineering processes to enable growth of only the desired microbes eukaryotic cell in large quantities for the manufacture of biotechnological products like antibiotics, vaccines etc. 

Restriction digestion is performed by incubating purified DNA molecules with the restriction enzyme, at optimal conditions.

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