If you were separating DNA molecules by agarose gel electrophoresis, how would you orient the wells in the chamber (closest to the cathode or closest to the anode)? Why?
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Agarose gel electrophoresis is a technique used to separate DNA molecules based on their size and charge. The gel acts as a sieve, allowing smaller molecules to move faster through the pores than larger ones. The process involves applying an electric field across Show more…
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Molecular Biology: True or False 5 When placing the agarose gel on the electrophoresis chamber; the sample wells should be positioned closest to the positive (+) pole Or anode. TRUE OR FALSE:
Adi S.
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 labeled A and B. Based on your knowledge of gel electrophoresis, which DNA fragment is larger? It would be impossible to tell. Wells [Direction of Current]
Suman K.
b. What is the correct orientation for the gel (i.e. position of wells) when placing it in the electrophoresis chamber and why is this important? c. Why do you think a scientist would cast a gel with the wells positioned in the center (see image below)? Think about the current that flows through the electrophoresis chamber once connected to the power supply and how molecules are separated within the gel. d. When loading a sample into the wells, why is it important to NOT press the plunger of your pipette down to the second stop?
Sarah C.
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