Figure 1.
Maximum likelihood tree based on 18S rDNA sequences built using PHYML. Taxonomic groups highlighted in bold were analyzed for genome size evolution. Accession numbers for the 18S rDNA sequences used in this analysis are given in Supplemental Table 1. (Inset) Alternative eukaryotic tree based on 31 orthologs that was used to verify the general trend of genome size evolution inferred from the 18S rDNA tree (Ciccarelli et al. 2006).
