🧪 DNA Ladder
10000 bp10 kb
8000 bp8 kb
5000 bp5 kb
3000 bp3 kb
2000 bp2 kb
1000 bp1 kb
500 bp500 bp
100 bp100 bp
🧬 Sample A
Band 1—
Band 2—
Band 3—
Est. size—
🧬 Sample B
Band 1—
Band 2—
Est. size—
Real-world connection: Standard DNA ladder (100 bp – 10 kb) loaded in lane 1. Higher agarose % (e.g. 2%) improves small fragment resolution (100–500 bp) but slows large DNA migration. Lower % (0.5%) allows large fragments (5–10 kb) to separate. Typical field: 5–10 V/cm gel length.