Figure 3 Agarose gel 0,8% of the products amplified by PCR. Specific primers of the genes OH of Saccharomyces cerevisiae⁄S. pas- torianus and S. bayanus were used. (a) ScHO-F⁄ScHO-R amplification: 1 Ladder marker (GeneRuler 100 bp DNA Ladder Plus), 2 Saccharomy- ces cerevisiae CBS 1171, 3 Saccharomyces pastorianus CBS. (b) LgHO- F⁄LgHO-R amplification: 4 Ladder marker (GeneRuler 100 bp DNA Ladder Plus), 5 Saccharomyces bayanus CBS 1604