Select all correct statements.
1. Sybr Safe is added to the gel before it solidifies.
2. 6X gel buffer is added to visualize if the DNA samples were loaded into the wells (and helps sink samples into the wells).
3. TAE buffer will be added to the gel after the DNA samples are loaded into the gel.
4. In the gel, DNA fragments will run toward the positive electrode.
5. Assuming the gel is run correctly, longer DNA fragments will travel farther away from the wells compared to shorter DNA fragments.