Summary
PROJECT SUMMARY Horizontal gene transfer (HGT) represents a dominant force in bacterial evolution, however its role in shaping the evolutionary processes in eukaryotic genomes has been a subject of intense debate. Class Bdelloidea of the phylum Rotifera, a large invertebrate taxon comprising close to 500 described species, has so far withstood any challenges questioning the massive amounts of HGT from non-metazoan sources reported in their genomes, and remain the record-holders among Metazoa with regard to the proportion of foreign genes, with HGT candidates comprising at least 8% of all codin
