Fig. 2

Comparative genomics and subgenome dominance analysis. a Phylogenetic tree and divergence time estimates of “JJ31” and five closely related species. The right panel shows the distribution of single-copy, multi-copy, unique, and other gene orthologs. b Evolutionary analysis of the “JJ31” and “AP13.” The Ks distribution is shown for orthologs in the switchgrass genomes. K and N represent two subgenomes, respectively. The parentheses contain the X-axis and Y-axis values corresponding to the peaks. c–h Assessment of subgenomic dominance in two haplotype genomes. Gene density of the two subgenomes in the “JJ31-A” (c) and “JJ31-B” (d). TE density of the two subgenomes in the “JJ31-A” (e) and “JJ31-B” (f). Number of dominantly expressed genes in the two subgenomes of the “JJ31-A” (g) and “JJ31-B” (h). The statistical window size is 1 Mb