Table 2.

Testing for correlated evolution between rates of nucleotide substitutions, unconverted to a binary state character, and symbiotic states as a binary character

Data set (nrDNA)	Rate	Rate 1	Rate 2	Likelihood ratio	P
25S	0.73	1.27	0.12	15.9	0.02
ITS1+ITS2	0.18	0.35	0.03	18.7	0.03
5.8S	1.21	2.11	0.40	13.9	0.07

Higher Rate 1 coefficients reveal a faster rate of evolution in mutualistic lineages.