The neural plate border region of vertebrate embryos gives rise to the neural crest and cranial placodes. Although the basal chordate amphioxus lacks a neural crest and most placodes, comparisons ...

New insights into chordate body plan development answer long-standing questions on evolution Examination of development-relevant gene expression patterns in starfish embryos reveals how echinoderm ...

The Middle Cambrian chordate known as Pikaia gracilens was once thought to be humanity’s earliest known ancestor, and the earliest known member of the phylum Chordata. Now, a new study flips ...

The notochord is an axial structure that provides support and patterning signals essential for development in all chordate embryos, including humans.

The notochord is an axial structure that provides support and patterning signals essential for development in all chordate embryos, including humans.

A northern Virginia judge determined embryos are not property that can be divided up, rejecting a previous analysis by the court saying such fertilized eggs could be considered divisible “goods ...

Furthermore, comparison of embryos of hemichordates (a basal deuterostome), amphioxus (a basal chordate), and vertebrates revealed that the somites likely arose from the "endomesoderm" tissue of ...

How does a developing embryo, which is initially round, tell left from right? This basic process is still poorly understood. However, investigating unusual cases can help shed light on how this ...