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Regulation of gene expression in the sea urchin embryo

Published online by Cambridge University Press:  11 May 2009

James A. Coffman  and
Eric H. Davidson
James A. Coffman
Affiliation:
Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA
Eric H. Davidson
Affiliation:
Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA
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Extract

In the undisturbed sea urchin embryo, cleavage of the blastomeres is invariant and gives rise to five polyclonal territories that are each defined by the larval structures to which they give rise, and by unique programmes of gene expression. These territories are the aboral ectoderm, the oral ectoderm, the vegetal plate, the skeletogenic mesenchyme, and the small micromeres. Structural gene markers for four of these territories (all except the small micromeres, which participate in later development) have been cloned and characterized, and the regulatory domains of several of these genes have been mapped to the level of specific protein-binding sites.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 74 , Issue 1 , February 1994 , pp. 17 - 26
Copyright
Copyright © Marine Biological Association of the United Kingdom 1994

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