Table 2

Likelihood analysis of the usp sequence datasets along three successive branches of the Mecopterida radiation
Model Likelihood Ratio Test
No Shift Branch relaxation Branch positive selectionBranch positive selection Relaxation positive selection
M1a (nearly neutral) modified branch-site model A ω2 = 1 fixed modified branch-site model A test 1 test 2
LnL (np) LnL (np) LnL (np) ω2 p-value p-value
Branch A -11732.4 (55) -11713.2 (56) -11711.1 (57) 999 6.6 10-11 4.2 10-2
Branch B -9769.8 (41) -9754.5 (42) -9750.9 (43) 97.3 8.0 10-9 6.8 10-3
Branch C -6946.6 (25) -6938.1 (26) -6937.5 (27) 4.75 1.1 10-4 0.56

LnL: log likelihood. np: number of parameters.

Chaumot et al.

Chaumot et al. BMC Evolutionary Biology 2012 12:199   doi:10.1186/1471-2148-12-199

Open Data