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Biochemistry and molecular logic of life
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Learn General Biochemistry with Rahul

Gel electrophoresis of DNA

  • Used to identify, separate and purify DNA fragments.
  • Location of DNA is identified by staining with ethidium bromide.

Gel electrophoresis | DNA Separation & Analysis | Britannica

Steps:

  • Agarose gels are cast by melting the agarose in the presence of desired buffer, until a clear, transparent solution is obtained.
  • The melted solution is then poured into a mold and allowed to harden.
  • Upon hardening, agarose form matrix.
  • When electric field is applied across the gel, DNA which is -vely charged migrate towards the anode.
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