@alicekadour: Preparing samples for gel electrophoresis — separating DNA by size with an electric current, one satisfying load at a time. 🧬 DNA is negatively charged, so when current runs through the agarose gel, the fragments migrate toward the positive end. Smaller pieces move faster through the gel matrix, creating distinct bands that can be visualized later with a dye or UV light. #stem #experiments #Science #satisfying #cool