Fig. 4
From: Spontaneous whole-genome duplication restores fertility in interspecific hybrids
Tetraploidization leads to sudden fertility recovery over time. Fertility trajectories at the three timepoints (Tini, Tmid, and Tend). Each connected set of dots represents an independent line. The colors correspond to ploidy. Dotted and full lines represent the two independent crosses within each genetic divergence class. Bolder lines correspond to the lines with significantly different proportions of viable spores between Tini and Tend. In the case of VL1 and VL2, the two pairs of strains show different level of fertility, which is frequent in yeast intra-species crosses
