Lophotrochozoa is a protostome clade that includes disparate animals such as molluscs,
annelids, bryozoans, and flatworms, giving it the distinction of including the most body plans …

It is widely held that the bilaterian tubular gut with mouth and anus evolved from a simple gut
with one major gastric opening. However, there is no consensus on how this happened. Did …

A notochord is characteristic of developing chordates (which comprise amphioxus, tunicates
and vertebrates), and, more arguably, is also found in some other animals. Although …

The notochord of the ascidian Ciona consists of only 40 cells, and is a longstanding model
for studying organogenesis in a small, simple embryo. Here, we perform RNAseq on flow …

The notochord is a structure required for support and patterning of all chordate embryos,
from sea squirts to humans. An increasing amount of information on notochord development …

Somites are transitory metameric structures at the basis of the axial organization of
vertebrate musculoskeletal system. During evolution, somites appear in the chordate phylum …

Cell lineage, cell cycle, and cell fate are tightly associated in developmental processes, but
in vivo studies at single-cell resolution showing the intricacies of these associations are rare …

Abstract In vertebrate embryos, Hedgehog (Hh) is expressed in some anterior basal plate
domains and by notochord and floorplate cells, and ventral neural cells are patterned by the …

Cell and tissue polarity due to the extracellular signaling and intracellular gene cascades, in
turn, signals the directed cell behaviors and asymmetric tissue architectures that play a …

Phylogenetics emerged in the second half of the nineteenth century as a speculative
storytelling discipline dedicated to providing narrative explanations for the evolution of taxa …