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Why does the DNA move through the gel when an electrical current is generated?
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Why does the DNA move through the gel when an electrical current is generated?

User ShadowDES
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Answer:

DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

Step-by-step explanation:

User WildThing
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