|10||10||Mussa is an N-way version of the [http://family.caltech.edu/ FamilyRelations] (which is a part of the [http://cartwheel.idyll.org/ Cartwheel] project) 2-way comparative sequence analysis software. Given DNA sequence from N species, Mussa uses all possible pairwise comparions to derive an N-wise comparison. For example, given sequences 1,2,3, and 4, Mussa makes 6 2-way comparisons: 1vs2, 1vs3, 1vs4, 2vs3, 2vs4, and 3vs4. It then compares all the links between these comparisons, saving those that satisfy a [wiki:transitivity transitivity requirement]. The saved paths are then displayed in an interactive viewer.