Assertion: chordate | /r/HasAspect | notochord
Facets:
value: at some stage in their lives
type: TEMPORAL
value: at some stage of development
type: TEMPORAL
Source sentences:
text: All chordates have a notochord that is present during some or all of their life cycle.
text: A chordate is an animal that has a notochord (a flexible, rod-shaped structure that supports the body of a developing chordate), a nerve cord, a tail, and structures called pharyngeal pouches at some point in its life.
text: All chordates have a notochord, a dorsal nerve cord, and pharyngeal slits at some point in their development.
text: Chordates all have a notochord at some stage of development, while hemichordates do not have a notochord.
text: Chordates have a notochord, which is a hollow, dorsal cord, derived from mesoderm.
text: All chordates have a notochord at some stage in their lives, but in some (such as tunicates) the notochord is lost in the adult, whereas in others (such as the vertebrates) the notochord is present in the embryo, but in later stages is largely replaced and surrounded by the vertebrae, or backbones.
text: My suspicion is that what it really means to say is that at some stage of their development (not 'at some stage of their life,' which implies time out of the uterus to many of us), all chordates have notochords, dorsal nerve tubes, pharyngeal slits, etc., and then it means to give examples of some of the things these structures develop into in various chordates.
text: I'm sure bats have them at some point in their development, and I'm equally sure they don't help bats swim at any stage of bat development, so saying 'all chordates have notochords, which helps the animal swim' sounds inconsistent with the basic fact that mammals are chordates.