Model | ln Lik | LLR | K | ΔAIC |
|---|
CA (BEMP) | -5411 | 0 | 25 | 0 |
IA (BE+MP) | -5092 | -319 | 44 | -300 |
IA (BM+EP) | -5009 | -402 | 44 | -383 |
IA (BP+EM) | -5038 | -373 | 44 | -354 |
IA (E+BMP) | -5115 | -296 | 42 | -279 |
IA (M+BEP) | -5128 | -283 | 42 | -266 |
IA (P+BEM) | -5060 | -351 | 42 | -334 |
IA (B+EMP) | -5022 | -389 | 42 | -372 |
- Common ancestry is compared with various independent ancestry models for four sequences with highly significant similarity to each other (see Appendix 2, Additional File 1 for the sequences). CA, common ancestry; IA, independent ancestry; LLR, log-likelihood ratio; K, number of parameters in model; AIC, Akaike information criterion. Model selection scores are relative to the common ancestry model; negative scores (LLR and ΔAIC) indicate better models. Independent ancestry model "BE+MP" indicates that B and E are homologous to each other, and that M and P are homologous to each other, yet B and E have an independent ancestry from M and P.
