Measuring DNA Strand Length of Different E. Coli Bacteria by Using Gel Electrophoresis

Our experiment successfully differentiated between three different types of E.Coli bacteria. This was accomplished by running DNA gel electrophoresis on the different samples of E. Coli. The three different DNA strands of E. Coli stopped at three distinct spots on the agarose gel. This allowed us to determine that the three samples of E. Coli did not have the same DNA makeup. Because the DNA strands were different from each other, we can positively conclude that the E. Coli samples were not from the same species. This type of information and methods can be applied in the everyday world. Forensic scientists use DNA electrophoresis to identify the DNA found at crime scenes and use it for DNA fingerprinting.

Research Done By:

Vince Coraci
Warren Mott High School

Dave DeCew
Sterling Heights High School