Characterization of the melanopsin gene (Opn4x) of diurnal and nocturnal snakes

Table 1 Parameter estimates and log likelihood values under branch models for the melanopsin genes Opn4m and Opn4x

Branch Model	np	ln L	κ	Parameters	BIC		LRT	df	P
1ω	213	−28,548.3	2.0	ω = 0.107	57,624.8	–
2ω	214	−28,539.9	2.0	OPN4m: ω = 0.097; OPN4x: ω = 0.125	57,601.5	1ω	17	1	0.000
3ω	215	−28,529.4	2.0	OPN4m: ω = 0.097; OPN4x: ω = 0.11; Snakes-OPN4x: ω = 0.20	57,591.9	2ω	21	1	0.000
3ω	215	−28,529.4	2.0	OPN4m: ω = 0.097; OPN4x: ω = 0.11; Snakes-OPN4x: ω = 0.20	57,591.9	1ω	38	2	0.000

np number of parameters, ln L ln likelihood, κ transition/transversion ratio, BIC Bayesian information criterion, LRT likelihood ratio test, df degrees of freedom

ISSN: 2730-7182