Assertion: internal fertilization | /r/HasProperty | done through copulation
Facets:
value: in mammals
type: OTHER
value: in other non-vertebrate animals
type: OTHER
Source sentences:
text: Internal fertilization in animals is done through copulation, which involves the insertion of the penis or other intromittent organ into the vagina or to the cloaca in monotremes, most reptiles, some birds, the amphibian tailed frog and some fish, the disappeared dinosaurs, as well as in other non-vertebrate animals.
text: In mammals, internal fertilization is done through copulation, which involves the insertion of the penis into the vagina.