I have been trying to use the tool CAFE 2.2: http://sites.bio.indiana.edu/~hahnlab/Software.html to look at gene family evolution. Now, the peculiar thing about CAFE 2.2 is that it asks for an ultrametric phylogenetic tree with integer branch lengths as input. I tried to just multiply my non-integer branch lengths with 100, 1000 etc to make them integer ones, but that does not seem to work with this program.
My Question: Are there any programs out there that allow you to build an ultrametric tree (UPGMA) and have the branch lengths displayed in integers?
P.S. I have tried MEGA, it does not seem to help!