Polymorphix is a database of intraspecific sequence polymorphism, structured under the ACNUC sequence database management system.

It allows one to select sets of within-(eukaryotic)species sequences families, and to visualize multiple alignments and phylogenetic trees.
Polymorphix is useful for meta-analyses of population genomics, and as a bibliographic tool in population genetics.

Families in Polymorphix are groups of sequences sharing at least 80% similarity. Outgroup have been added when available (78% similarity required), and aligned to the within-species profile. Sequence alignments and Neighbour-Joining phylogenetic trees can be viewed.

It is also possible to query the database on this server through the WWW-Query system. This interface is not made to do specific request on Polymorphix but it could be useful to expert users who wants to modify their selection.