Amphioxus or lancelet belongs to the subphylum Cephalochordata, an extant representative of the most basal
chordates. Recently, we have found that amphioxus possesses a single GH-like hormone (GHl) gene encoding a functional protein capable of promoting growth [26].
(2008) The amphioxus genome and the evolution of the
chordate karyotype.
Humans are part of a group of animals called
chordates, whose defining feature is a rod of cartilage that runs lengthwise along the middle of their body, under their spinal chord.
At some point in their development from embryo to adult, all
chordates have a "notocord", a flexible rod supporting a nerve cord running down the back.
In the case of amphibian's phylogeny it's imply the rearrangement of the cells toward a tridermic organisms and within this process the evolution to early
chordate life forms.
In the case of amphibian phylogeny, this may be reflected by the rearrangement of cellular organization toward tridermic organisms and within this process the evolution of early
chordate life forms.
The neurobiology of the ascidian tadpole larva: recent developments in an ancient
chordate. Ann.
Numerical values were assigned to the following categorical traits: leaf shape (0 =
chordate, 1 = ovate, 2 = rhombohedric and 3 = hastate), flower pigmentation (0 = white, 1 = lavender), base of standard (0 = striped and i = smooth), bracteole size (0 = small, 1 = medium, 2 = large), bracteole shape (0 = cordate, 1 = lanceolate, 2 = ovate and 3 = triangular), and pod beak position (1 = central, 2 = placental).
Together with concepts such as
Chordate, Larva, and Fictional_Animal, we find apparently more specific concepts, such as Work_Animal, Domestic_Animal, Mate, Captive, and Prey.
A little more hazily, I recall highlights of my cellular journey long before the first
chordate.
Ependymal cells of
chordate larvae are stem-like cells that form the adult nervous system.