I'm trying to do phylogenetic reconstruction using discrete character data, such as geographical distribution. For example:
species A Asia species B Europe species C Africa species D Europe
This works fine for me, however, my situation is that some species are distributed in more than one continents, for example
species E Asia,Europe
My question is how I can code multiple character states into one data point for popular phylogenetics softwares, including BEAST, MrBayes, Mesquite, etc. My favorite is BEAST. I tried the way above in BEAST, but it didn't work. In the xml file, "Asia,Europe" is treated as one character state, instead of "Asia" and "Europe", which I desired. So I'm posting to request if anyone can give me a solution, or tell me it's just not possible.