In November 2017, we searched the literature systematically lo determine the frequency of leucism among classes of chordates
. We first searched Web of Science for the terms leucistic, leucism., and partial albinism.
Ferrier et al., "The amphioxus genome and the evolution of the chordate
karyotype," Nature, vol.
(17) At some point between the origin of chordates
and that of jawed vertebrates, an entire genome was duplicated at two different times.
Ciona intestinalis is a basal chordate
and a close relative of vertebrates, (7,8) and the Ciona larva exhibits a typical chordate
They found that the cells form a muscle that runs along the animal's midline, precisely where the notochord would be if the worm were a chordate
. The researchers named this muscle the axochord, as it runs along the animal's axis.
What does the term chordate
mean when applied to animal species?
Adams, "Phylogenetic analysis of the tenascin gene family: evidence of origin early in the chordate
lineage," BMC Evolutionary Biology, vol.
After positioning of the cursor through interventricular septum and posterior wall, at the level of chordate
tendinae, simultaneous M-mode and two dimensional recording were obtained from the parasternal transducer position in both long and short axis views of the left ventricle.
Hemichordates also share many of the same characteristics as chordates
- a group of animals that includes humans - with the name hemichordate roughly translating to 'half a chordate
It is a member of the chordate
family, a group that today includes fish, amphibians, birds, reptiles and mammals.