Your instructor will demonstrate the use of the micropipettor and how to set up the apparatus for gel electrophoresis. Different dyes (single dyes and mixtures of dyes) will be placed into the wells of a gel. Observe and record the results of this gel electrophoresis and answer the following questions: 

1. Draw the pattern observed in the dye separation experiment. 

2. Which dyes migrated toward the negative pole? 

3. Which dyes migrated toward the positive pole? 

4. Why did the dyes migrate toward different pales? 

5. Which dye is the smallest in size?