A typical agarose fingerprinting gel. (A) Shown is gel number rn0211c, produced at the BCCA GSC in July 2001. Resolvable fragments range in size from about 30,000 bp to 600 bp. The gel contains 96 data lanes and 25 marker lanes, with marker lanes occurring every fifth lane. The data lanes are never more than one lane removed from a known DNA standard. (B) Close-up of a marker lane, indicating the size in bp of the 37 marker fragments.