Gel electrophoresis separates DNA fragments according to their ________.

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Gel electrophoresis separates DNA fragments based on their length. The shorter fragments move faster through the gel than longer fragments and thus are separated based on size. Charge and polarity can also play a role in some forms of electrophoresis but are not relevant to DNA gel electrophoresis. Base sequence is not directly relevant to the separation process in gel electrophoresis.

Gel Electrophoresis Separates DNA Fragments According to Their ________