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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?
Most Upvoted Answer
Gel electrophoresis is used fora)cutting of DNA into fragmentsb)separa...
Gel electrophoresis is a technique commonly used in laboratories to seperate charged molecules like DNA ,RNA and Protein according to their size. Charged molecules move through a gel when an electric current is passed across it. An electric current is applied across the gel so that one end of the gel has a positive charge and the other end has a negative charge. The movement of charged molecules is called migration. Moleces migrate towards the opposite charge. A molecule with a negative charge will therefore will be pull towards the positive end.
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Community Answer
Gel electrophoresis is used fora)cutting of DNA into fragmentsb)separa...
Gel electrophoresis is concerned with the use of POROUS gels like Polyacrilamide through which DNA fragments move on, according to the electric gradient provided. The smaller DNA fragments,being light, move on for a longer distance, whereas the larger ones stay back, being heavier.
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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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