Evolution of galanin receptor genes: insights from the deuterostome
We think that as an early deuterostome
this may represent the primitive beginnings of a very diverse range of species, including ourselves," study co-author Simon Conway Morris from the University of Cambridge, said in a (http://www.
They are wide-spread, occur both in pro- and eukaryotes, in particular in bacteria and are found in some viruses, protozoa, a few insect species and regularly in deuterostome
animals, from echinoderms onward.
Evolution of the chordate body plan: New insights from phylogenetic analyses of deuterostome
Another very primitive stem group of deuterostomes
, called ventulicolians, has also recently been described that might represent the anatomy of organisms near the base of the deuterostome
evolutionary branch that were ancestral to both the chordates and echinoderms.
super-phylum includes three other major animal body architectures: the phyla Chordata (including Humans), Echinodermata (starfish and sea urchins) and Hemichordata (acorn worms).
It is conceivable that a twisting of the body organization would have turned a protostome into a deuterostome
Of course, eyes are characteristic of the vertebrates in the deuterostome
We recently reported that larval sea stars are capable of complete regeneration of missing body parts, providing a new deuterostome
model for the study of regeneration.
Despite being trained in comparative anatomy, or perhaps because of it, I was distrustful of some of the morphological criteria - for example, diploblastic versus triploblastic, or proterostome versus deuterostome
- used in reconstructing phylogeny.
Amplification with BsGSF and BsGSR resulted in an amplicon of 304-bp sharing similarity with other deuterostome
glutathione synthases (GSs) (GenBank accession no.
To infer the phylogenetic relationships of CrAQP with other AQP grades already recognized as occurring in parazoan, cnidarian, or basal deuterostome
subclusters, we used the dataset and alignment computed by Finn and colleagues to build the tree presented in figure S4 of their 2014 paper (Finn et al.