AP Biology students learned how molecules can be separated and identified by electrophoresis, the movement of charged particles in gel under the influence of an electric field. Before performing the lab, students learned how to use micropipettes, small and extremely fine-pointed pipettes used in making microinjections. They practiced and worked on their technique before beginning.
Gel electrophoresis separates DNA segments based on weight. It allows us to look at “fingerprints” left by DNA to determine where it came from and discover similarities between other samples. It is currently used across the globe in forensic labs and also in COVID-19 testing.