Fig. 3. Subgenome expression dominance.

Homoeolog expression bias (HEB) for all testable homoeolog pairs, shown in gray histograms. Testable homoeolog pairs (n) are those that could confidently be identified as homoeologous on the basis of synteny and assigned to a subgenome with phylogenetic support (>80% bootstrap), and that had at least one read in each transcriptome dataset. Homoeolog pairs significantly biased toward the F. vesca homoeolog are shown in red, and pairs significantly biased toward the ‘other’ homoeolog from one of the other three diploid progenitors are shown in black.