Uploaded June 2026 | Updated September 2026, 1 hour ago

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⚡ DNA fragments racing through jelly? That’s basically gel electrophoresis.

Stanley walks us through this super-short practical, showing how scientists separate DNA by size using an electric current in the labs at the Wellcome Sanger Institute - one of the core techniques you need for A-Level Biology, genetics, DNA profiling, and biotechnology. 🧬

Perfect for:

- Quick revision
- Required practicals
- Visual learners
- Last-minute exam prep

Smaller fragments move further. Negative DNA moves to the positive electrode. Bands reveal the results. Simple — but massively important in modern biology.

Watch it once before your exam and the process actually sticks.

#ALevelBiology #GelElectrophoresis #BiologyRevision #DNA #Genetics #Biotech #SciencePractical #AQA #OCR #Edexcel