Figure 2.

Revertants showing different morphologies from the parental strains. Diploid strains are on the left of the figure, whereas haploids are on the right. At macroscopic level, the variations were detected in the presence of glucose (A) were more striking with glycerol (B) (magnification × 10). At microscopic level (C), the neutral red staining observed shows that diploid and haploid parental cells (denoted wt-2n and wt-n, respectively) have classical ellipsoidal shapes, whereas revertants are more elongated and form aggregates (magnification × 1000).