A new evolutionary scenario for the vertebrate jaw | Zendy

Shigetani Y. | Zendy; Sugahara F. | Zendy; Kuratani S. | Zendy

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A new evolutionary scenario for the vertebrate jaw

Author(s) -

Shigetani Y.,

Sugahara F.,

Kuratani S.

Publication year - 2005

Publication title -

bioessays

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.175

H-Index - 184

eISSN - 1521-1878

pISSN - 0265-9247

DOI - 10.1002/bies.20182

Subject(s) - lamprey , vertebrate , biology , extant taxon , evolutionary biology , evolutionary developmental biology , evolution of mammals , zebrafish , anatomy , gene , genetics , paleontology

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.

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