Features of control datasets. Asc: homologues of fungi belonging to the division of Ascomycota, 18SRNA: Dataset of 18S rRNA sequences. A). The distribution of sequence divergence for the control datasets and the reference dataset of UP-70 L-20p. B). The distribution of correlation coefficients between genetic distance matrices for the control and reference datasets. C). The percentage occurrence of the 3 different categories describing similarity in tree topologies is represented for the control datasets and the reference dataset of UP-70 L proteins.