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Gel electrophoresis is used for
  • a)
    cutting of DNA into fragments
  • b)
    separation of DNA fragments according to their size
  • c)
    construction of recombinant DNA by joining with cloning vectors
  • d)
    isolation of DNA molecule 
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Gel electrophoresis is used fora)cutting of DNA into fragmentsb)separa...
Gel electrophoresis is a technique to separation of DNA fragments according to their size. DNA is negatively charged so in gel tank when electric passed, DNA move towards positive electrode. 
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Most Upvoted Answer
Gel electrophoresis is used fora)cutting of DNA into fragmentsb)separa...
In gel electrophoresis,DNA is negatively charge which move form left to right i.e cathode to anode. They are filled with agarose gel which is a thread like tangled structure.The larger size of DNA will stop first and the least size DNA fragments will move far according to their size.So less size they will move far.So they are arranged according to their size which help in RDNA technology.
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Gel electrophoresis is used fora)cutting of DNA into fragmentsb)separation of DNA fragments according to their sizec)construction of recombinant DNA by joining with cloning vectorsd)isolation of DNA moleculeCorrect answer is option 'B'. Can you explain this answer?
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