...assification: aaaaaa, PAML: aaaaaa) (Jukes and Cantor 1969)
Felsenstein 1981 (F81, nst=1): variable base frequencies, all substitutions equally likely (PAUP*: aaaaaa, PAML: aaaaaa) (Felsenstein 1981)
Kimura 2-parameter (K80, nst=2): equal base frequencies, one transition rate and one transversion ...