Fig. 3. Compared are ratios of sizes of daughter cells following mitotic cell division in wild-type and mutant cell populations. Histograms display the number of cells with a given large-/small-cell area ratio. uni3-1 cells produce daughters of unequal sizes, suggesting a defect in the placement of the cleavage furrow. This defect is not suppressed by either of the tua2 alleles. tua2 strains show wild-type ratios, which indicates that the positioning of the cleavage furrow is not affected by the mutations.