Shared competence of neural crest- and lateral plate mesoderm-derived cells forms the basis of gill arch-paired fin serial homology. (IMAGE)

Marine Biological Laboratory

Shared competence of neural crest- and lateral plate mesoderm-derived cells forms the basis of gill arch-paired fin serial homology.

Caption

Shared competence of neural crest- and lateral plate mesoderm-derived
cells forms the basis of gill arch-paired fin serial homology. (A) The neural crest
(blue) and lateral-plate mesoderm (red) contribute to a field of mesenchyme (purple)
at the head trunk boundary with a common skeletogenic competence in the ~S19/20
skate embryo. (B) Anatomical structures that derive from this field of

mesenchyme—the skeleton of the jaw, gill arches, and paired fins (in purple)—are
serially homologous because of the reciprocal equivalence and shared response of
their generative mesenchyme to local external stimuli. (From Wen, Prince and Gillis,
PNAS, 2026)

Credit

From Wen, Prince and Gillis, PNAS, 2026

Usage Restrictions

N/A

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.