Saksham Bhatia on Instagram: "😂🧬🕊️🧬 Movement of DNA in Gel Electrophoresis When the 🔌 power supply is switched on, an electric field is created across the gel tank. Since DNA carries a negative charge (because of its phosphate backbone), it is repelled by the cathode (−) and attracted toward the anode (+). 👉 Therefore, DNA always moves from the negative end to the positive end. The agarose gel acts like a 🧩 molecular sieve, allowing smaller fragments to move more easily while slowing down