Fig. 1.—

Fungal phylogeny and distribution of UIR size. Maximum likelihood phylogeny based on concatenated amino acid sequence for 100 single copy orthologs ranked by UIR invariance. Taxonomic groupings used throughout the study are highlighted, ranging from phylum Ascomycota (darkest blue) to subdivision Pezizomycotina, class Eurotiomycete, order Eurotiale, and genus Aspergillus (lightest blue). Upstream intergenic size distribution for each species is shown at right. Box plots span first and third quartiles (whiskers extend to 1.5× these values), median values are indicated by a black bar.