Consider the gel electrophoresis image shown on the left. Note the position of the wells and the direction of current through the gel. Look at the DNA bands labelled A and B. Based on your knowledge of gel electrophoresis, which DNA fragment is larger? It would be impossible to tell. B A Wells Direction of Current
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Suman K.
What information is gel electrophoresis going to give you about a DNA sample? What does "phoresis" refer to? What surrounds the agarose gel? The divots in the gel that you put sample into are called wells. What is the buffer made of? What is the purpose of the buffer? What charge is on the side with the wells? What charge is on the side furthest from the wells?
Madhur L.
Explain how gel electrophoresis is used to separate DNA fragments of different lengths.
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