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Gel Electrophoresis DNA Fragment Size

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Several DNA samples were digested with various restriction enzymes (endonucleases) and separated by gel electrophoresis, as shown.

Diagram of a vertical gel electrophoresis result with three labeled lanes at the top: EcoRI, HaeIII, and HindIII. Each lane contains horizontal black bands representing DNA fragments. The EcoRI lane h

In this gel, the smallest DNA fragments are located

A

on the left side of the gel

B

at the bottom of the gel, farthest from the wells

C

on the right side of the gel

D

at the top of the gel, closest to the wells

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