English: The image above shows a typical result of DNA electrophoresis in regards to the size of DNA fragments and the distance migrated through the agarose gel. On the left, there is a marker sample that can be used as a control and as a reference for the length of the DNA (in base pairs). To the right of the marker, there are three examples of different DNA samples: Sample A, Sample B and Sample C. The image displays how smaller DNA fragments move farther throughout the agarose gel than the larger fragments of DNA. These distances can be used to identify or match specific DNA sequences. The graph to the right of the image shows the nonlinear, relationship between the size of the DNA fragments and the distance migrated. It is a negative curve because as DNA fragments get larger, they migrate less distance through the gel.
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