A new evolutionary scenario for the vertebrate jaw
Article first published online: 15 FEB 2005
Copyright © 2005 Wiley Periodicals, Inc.
Volume 27, Issue 3, pages 331–338, March 2005
How to Cite
Shigetani, Y., Sugahara, F. and Kuratani, S. (2005), A new evolutionary scenario for the vertebrate jaw. Bioessays, 27: 331–338. doi: 10.1002/bies.20182
- Issue published online: 15 FEB 2005
- Article first published online: 15 FEB 2005
- The Ministry of Education, Science and Culture of Japan. Grant Numbers: 11309010, 11NP0201, 11152225
The jaw is one of the earliest innovations in vertebrate history. Several recent findings suggest a scenario for jaw evolution as a progression of changes in pharyngeal developmental mechanisms. The lamprey, an extant jawless vertebrate, constitutes a model for the pre-gnathostome ancestry. Comparing expression patterns of regulatory genes between the gnathostome and lamprey embryos may enable us to get a glimpse of the essential changes that were responsible for the evolution of the jaw. We hypothesize that a specific topographical change of inductive tissue interactions to be described here brought about the jaw as an evolutionary novelty. BioEssays 27:331–338, 2005. © 2005 Wiley Periodicals, Inc.