Labster: Gel Electrophoresis: Visualize and separate nucleic acids {ANSWERS}

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4 Terms

1
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What is the function of a ladder in gel electrophoresis?

Gauge the size of the bands in the sample

2
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Where on the gel will the largest DNA molecules be, and why?

Near the top because they can not migrate through the matrix of the gel as fast

3
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How are DNA or RNA molecules visualized on the gel?

A labeled dye that binds to the DNA is added

4
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Click on the electrophoresis machine to have a closer look at the gel. Based on the band patterns, which suspect sample matches the crime scene sample and therefore belongs to the thief?

Suspect 2