Day Three- Gel loading and electrophoresis.

What is the charge of DNA?

How does an electrolytic cell work?

What is an anode?  Cathode?  What are their charges?

Diagram what will occur within the gel as electrophoresis proceeds.

Label the direction of DNA travel, and charges in the cell.

Why will some pieces travel further than others? 

Procedure:  Watch teacher model of procedure for loading and running gel.  Write the procedure below:  What are some common pitfalls to avoid?