1 November 2019
The Grade 12 Biology SL and HL students conducted a lab about DNA profiling in the form of gel electrophoresis. This lab work is relevant to the unit of Theoretical Genetics that we are studying as it relates to its important use in paternity and forensic investigations. The gel electrophoresis lab requires students to use food coloring as an alternative to DNA and test them by adding each different food coloring into a gel made specifically for this lab and moving them through an electric field that separates them based on their size. The gel electrophoresis works as smaller fragments of DNA moves further down the origin and gel, acting similarly to a sponge that are made up of pores. This movement and separation of DNA fragments are used to compare between other DNAs that will be tested, such as blood, hair, skin, salive, etc. Although, the end results of this lab were very minimal, it was still pertinent on studying this specific topic as it was able to give students firsthand knowledge and experience on gel electrophoresis.
- D Moni