Figure 1.

Duplication characteristics among 11 Caenorhabditis species

(A) Phylogenetic tree of the 11 Caenorhabditis species used to identify duplication events in a DLC model. The number of OGs, genes in OGs, and duplicates generated in different time periods are indicated for each species. The number of significantly expanded (red) and contracted (green) OGs on the branches (both terminal and internal) are shown.

(B) The number of genes from the top three gene families of recently duplicated genes for each species, and the number of genes gained or lost in the significantly expanded or contracted OGs, respectively, defined by the difference between the number of genes in one species and the average of the other ten species. Only the top three affected gene families that gained ≥30 genes or lost ≥10 genes are shown.

(C) The number of expanded (red) and contracted (green) OGs with specific domains or functions in the 11 species. See Table S5 for details.

(D) Enriched gene ontology terms for the 2,251 genes in the C. elegans-expanded and -specific OGs.