The complex phylogenetic distribution of GiMAP/IAN-1 loci. The figure shows results of a phylogenomic survey conducted using a combination of similarity and HMM methods. For each clade, the name of a representative genus is indicated and coloured in red if the genome of the taxon encodes GiMAP/IAN-1 domains and black if not. The numbers of domains detected are indicated to the right of the species name. Note that, in the case of the Lophotrochozoa, GiMAP/IAN-1 domains were detected only in Lottia (i.e. not in Schistosoma or Capitella). Abbreviations: LUCA last universal common ancestor; LECA last eukaryotic common ancestor.