Table 4.

Gamma Distribution Simulations. Results of simulations when the α parameter of the gamma distribution was varied between 0.5, 1.0, and 2.0. The sequence length was kept constant at 500 characters and the proportion of invariable sites was 0.2. Each entry is the number of times out of 100 replicates that the correct model was selected.

	α = 0.5			α = 1.0			α = 2.0
Model	AIC1	AIC2	BIC	AIC1	AIC2	BIC	AIC1	AIC2	BIC
BLOSUM62+G	75	83	87	32	62	69	36	68	74
BLOSUM62+I+G	90	88	87	95	93	92	100	100	100
CPREV+G	89	89	90	39	72	77	39	65	79
CPREV+I+G	80	75	73	93	89	89	100	100	100
Dayhoff+G	77	86	90	33	36	74	38	60	66
Dayhoff+I+G	82	74	74	98	95	92	100	100	100
JTT+G	78	85	86	43	71	76	25	54	63
JTT+I+G	89	85	82	98	96	94	100	100	100
MtREV+G	92	94	95	46	72	76	51	75	84
MtREV+I+G	68	65	61	90	85	83	100	100	100
WAG+G	83	89	89	35	70	76	32	70	79
WAG+I+G	79	73	69	97	91	90	100	100	100
Dayhoff+I+G	54	35	38	82	74	74	95	92	91
JTT	95	98	98	94	99	100	93	98	100
JTT+I	95	99	98	96	100	100	96	100	100
JTT+G	87	94	94	78	85	86	91	91	93
JTT+I+G	48	36	40	89	85	82	96	95	94
MtREV	95	98	98	85	96	97	91	97	97
MtREV+I	97	100	100	92	99	100	97	100	100
MtREV+G	86	97	97	92	94	95	92	95	96
MtREV+I+G	29	17	17	68	65	61	87	85	83
WAG	91	97	96	88	97	99	97	98	100
WAG+I	94	100	99	98	100	100	97	99	100
WAG+G	85	95	93	83	89	89	86	95	95
WAG+I+G	50	34	36	79	73	69	97	96	94