Dr. Kyle Happel ’89  gets an enthusiastic answer from seniors Andrew Nguyen, Chance Melancon, and Jeremy Scheffler who have just completed a DNA gel electrophoresis to identify a fictitious crime suspect. Dr. Happel visited Mrs. Amy Tassin’s Biology II AP class to lead a two-day DNA electrophoresis lab yesterday and today. Students participating in the lab compared DNA samples similar to the way CSI labs use DNA fingerprints to help determine guilt or innocence. They ran a electrophoresis, separated the DNA fragments by size, and used a high intensity ultraviolet light source to view the results.