Bubble Gum Mystery

This lab is based on electrophresis and bubble gum.

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Background

Last week your teacher found a big wad of gum on her chair.  Who put the gum on the chair? She has three very adamant gum chewers in her class.  Having asked them numerous times to spit outtheir gum, she suspects that the gum belonged to one of them.  But how can we tell whose gum it is?  You can help figure this mystery out.

Materials

• DNA from three suspects labeled 1, 2, 3
• the GUM (G)
• agarose
• Tris-acetate/EDTA solution (TAE)
• micropipette and tips
• electrophoresis apparatus 

Click here to get the pdf