Modularity of gene-regulatory networks revealed in sea-star development
McDougall Carmel | Degnan Bernard
Abstract Evidence that conserved developmental gene-regulatory networks can change as a unit during deutersostome evolution emerges from a study published in BMC Biology. This shows that genes consistently expressed in anterior brain patterning in hemichordates and chordates are expressed in a similar spatial pattern in another deuterostome, an asteroid echinoderm (sea star), but in a completely different developmental context (the animal-vegetal axis). This observation has implications for hypotheses on the type of development present in the deuterostome common ancestor. See research article: <url>http://www.biomedcentral.com/1741-7007/8/143/abstract</url>
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