FIG. 1.

RAPD analysis of relatedness. RAPD tests were carried out on the related strain pairs 88-3887 and 26695 and also on X47 and 98QM3, as discussed in the text, by using primers 1247 (left eight lanes), 1254 (top right eight lanes), 1281 (bottom left), and 1283 (bottom right) (3). The first and second lanes in each set contain products of duplicate RAPD tests, carried out with 5 and 20 ng of template DNA, to ensure that any differences seen are reproducible (or to learn when they are not). Lanes labeled m contain 1-kb marker size standards from Gibco-BRL.