Table 2.

Mean Branch Lengths, dN, dS, and dN/dS ratios of High- and Low-Elevation Species.

Sequence	Index	High Elevation	Low Elevation	Statistics (df = 6)a
NUC	Length	0.01196 ± 0.00528	0.01471 ± 0.00630	t = −3.864, P = 0.008
	dN	0.00149 ± 0.00071	0.00187 ± 0.00087	t = −3.732, P = 0.010
	dS	0.01018 ± 0.00436	0.01242 ± 0.00513	t = −3.885, P = 0.008
	dN/dS	0.14438 ± 0.00735	0.14775 ± 0.00887	t = −1.454, P = 0.196
MIT	Length	2.13605 ± 0.72434	3.11963 ± 1.07576	t = −3.615, P = 0.011
	dN	0.02349 ± 0.00787	0.03359 ± 0.01137	t = −3.889, P = 0.008
	dS	1.04163 ± 0.35518	1.52892 ± 0.53026	t = −3.548, P = 0.012
	dN/dS	0.02265 ± 0.0013	0.02208 ± 0.00101	t = 1.044, P = 0.337

Note.—NUC, concatenated nuclear sequence; MIT, concatenated mitochondrial sequences. Values are given as mean ± SD.

^aTwo-tailed paired-sample t-tests for log transformed mean differences.