Figure 2.
Ancient WGD Identification (IAsα) and Timing of the Event in Acropora
(A) Frequency distribution of dS values for paralogous gene pairs in five Acropora and one Astreopora species showing that a WGD event occurred in Acropora. Similar peaks (dS value: 0.1–0.3) in dS distributions of the five Acropora lineages indicate that a WGD event occurred in Acropora. (Light red, A. digitifera; light yellow, A. echinata; light green, A. gemmifera; light blue, A. subglabra; light purple: A. tenuis; light cyan, Astreopora sp1).
(B) Hypothetical tree topology of duplicated genes in the Acroporidae and the phylogeny of one duplicated gene (alpha-protein kinase 1-like). The phylogenetic tree shows gene retention, loss, and duplications following WGD.
(C) Co-linear gene alignments of Astreopora sp1 and A. tenuis on scaffolds. The gray links show orthologs between Astreopora sp1 and A. tenuis.
See also Figures S5–S10 and Tables S1–S3.