NDLI: Lamprey Dlx genes and early vertebrate evolution.

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Lamprey Dlx genes and early vertebrate evolution.

Content Provider	Semantic Scholar
Author	Neidert, Adam H. Virupannavar, V. Hooker, Gillian W. Langeland, James A.
Copyright Year	2001
Abstract	Gnathostome vertebrates have multiple members of the Dlx family of transcription factors that are expressed during the development of several tissues considered to be vertebrate synapomorphies, including the forebrain, cranial neural crest, placodes, and pharyngeal arches. The Dlx gene family thus presents an ideal system in which to examine the relationship between gene duplication and morphological innovation during vertebrate evolution. Toward this end, we have cloned Dlx genes from the lamprey Petromyzon marinus, an agnathan vertebrate that occupies a critical phylogenetic position between cephalochordates and gnathostomes. We have identified four Dlx genes in P. marinus, whose orthology with gnathostome Dlx genes provides a model for how this gene family evolved in the vertebrate lineage. Differential expression of these lamprey Dlx genes in the forebrain, cranial neural crest, pharyngeal arches, and sensory placodes of lamprey embryos provides insight into the developmental evolution of these structures as well as a model of regulatory evolution after Dlx gene duplication events.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.pnas.org/content/98/4/1665.full.pdf
PubMed reference number	11172008v1
Volume Number	98
Issue Number	4
Journal	Proceedings of the National Academy of Sciences of the United States of America
Language	English
Access Restriction	Open
Subject Keyword	Body tissue Branchial arch structure Clone Cells Embryo Gene Duplication Abnormality Lampreys Neural Crest Petromyzon Pharyngeal structure Prosencephalon Vertebrates
Content Type	Text
Resource Type	Article

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