Anatomical system that has as its parts the organs concerned with reproduction.
Comment:
[homology-note] "Arguably, one of the most important aspects of urbilaterian organogenesis would have been gonadogenesis, since Urbilateria must have successfully generated gametes and developed a strategy for extrusion and fertilization, in order to be the ancestor of all living Bilateria.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000182", ontology="VHOG", source="PMID:21672850 Extavour CGM, Gray anatomy: phylogenetic patterns of somatic gonad structures and reproductive strategies across Bilateria. Integrative and Comparative Biology (2007)", source="http://bgee.unil.ch/"}