Table 2.

Results of positive selection analysis for the branch of the genus Parnassius.

Gene	Model with Positive Selection (Model A)			Null Model (Model A null)		LRT	p-Value	Biological Category
	L1	Parameters	Positively Selected Sites	L0	Parameters	2ΔL
ILF2	−1335.05	k = 1.73	Ser149Gln 0.98 *	−1337.71	k = 1.71	5.32	0.02	RNA splicing and DNA damage response
		p0 = 0.97			p0 = 0.95
		ω0 = 0.02			ω0 = 0.02
		ps = 0.02
		ωs = 25.86
PRPF17	−4662.37	k = 1.65	Ala289Cys 0.98 *	−4664.23	k = 1.64	3.72	0.05	pre-mRNA splicing and mRNA surveillance
		p0 = 0.97			p0 = 0.95
		ω0 = 0.03			ω0 = 0.03
		ps = 0.01
		ωs = 14.87
SHF	−3105.63	k = 2.04	Val300Arg 1.00 **	−3108.38	k = 2.02	5.50	0.02	morphogenesis and patterning
		p0 = 0.94	Lys304Arg 0.98 *		p0 = 0.91
		ω0 = 0.02	Asp314Arg 0.98 *		ω0 = 0.02
		ps = 0.03
		ωs = 5.34
CDASE	−11227.05	k = 1.95	Arg307Val 0.97 *	−11229.24	k = 1.94	4.38	0.03	development and stress responses
		p0 = 0.92	His605Ala 0.98 *		p0 = 0.91
		ω0 = 0.05			ω0 = 0.05
		ps = 0.01
		ωs = 9.96
PGM2	−5402.44	k = 1.79	Cys504Thr 1.00 **	−5406.12	k = 1.77	7.36	0.01	glycogen metabolism and environmental adaptation
		p0 = 0.88			p0 = 0.86
		ω0 = 0.06			ω0 = 0.06
		ps = 0.01
		ωs = 15.05

* if the posterior probability is >0.95, and ** if the probability is >0.99 in the Bayes empirical Bayes (BEB) calculation; the numerical order of positively selected sites referred to the corresponding genes of Bombyx mori; L₁, Log-likelihood value in Model A; L₀, Log-likelihood value in Model A null; LRT, likelihood ratio test; 2△L, equal to 2 × (L1-L0).