Authors:
E Benito-Gutiérrez, D Arendt
Journal name: 
Curr Biol
Citation info: 
19(15):R640-R642
Abstract: 
Whether the highly centralised nervous systems of chordates and protostomes arose from a common ancestral precursor or independently has been a long-standing debate. Now, analysis of neural gene expression in an evolutionarily important chordate outgroup--the sand-dwelling, hemichordate acorn worms--reveals the presence of a central and peripheral nervous system, suggesting a common origin of central nervous systems.
DOI: 
http://doi.org/10.1016/j.cub.2009.06.020
E-pub date: 
11 Aug 2009