Relative distance based upon protein maximum likelihood. A. ceylanicum to A. cananum distance is similar to C. elegans to C. briggsae distance. Ancylostoma to Caenorhabditis distance for any species is 4.3X the Ancylostoma to Ancylostoma distance and 4.1X the Caenorhabditis to Caenorhabditis distance. The length of each line segment is proportional to the calculated branch length between the species.
Mitreva et al. BMC Genomics 2005 6:58 doi:10.1186/1471-2164-6-58