FIGURE 3.
Dot plot within the poplar genome. Poplar chromosomes are aligned horizontally and vertically. Homologous gene pairs are shown in red, blue, and gray to denote the best, second-best, and other matches, respectively. The synonymous substitution values (Ks) next to the homogeneous block are divided into red and blue according to the Ks peak (i.e., duplication event).