Assertion: housefly's egg | /r/HasProperty | retained in the oviduct
Facets:
Source sentences:
text: The tsetse fly (as well as other Glossinidae, Hippoboscidae, Nycteribidae and Streblidae) exhibits adenotrophic viviparity; a single fertilised egg is retained in the oviduct and the developing larva feeds on glandular secretions.