The deuterostome context of chordate origins.

• Autores: Christopher J. Lowe, Nathaniel D. Clarke, Daniel M. Medeiros, Daniel S. Rokhsar, John Gerhart
• Localización: Nature: International weekly journal of science, ISSN 0028-0836, Vol. 520, Nº 7548, 2015, págs. 456-465
• Idioma: inglés
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• Resumen

  • Our understanding of vertebrate origins is powerfully informed by comparative morphology, embryology and genomics of chordates, hemichordates and echinoderms, which together make up the deuterostome clade. Striking body-plan differences among these phyla have historically hindered the identification of ancestral morphological features, but recent progress in molecular genetics and embryology has revealed deep similarities in body-axis formation and organization across deuterostomes, at stages before morphological differences develop. These developmental genetic features, along with robust support of pharyngeal gill slits as a shared deuterostome character, provide the foundation for the emergence of chordates.