Developmental biology: A chordate with a difference

@article{Holland2007DevelopmentalBA,
  title={Developmental biology: A chordate with a difference},
  author={Linda Z. Holland},
  journal={Nature},
  year={2007},
  volume={447},
  pages={153-155}
}
Molecular studies of tunicate development show that genetic programmes for early embryonic patterning can change radically during evolution, without completely disrupting the basic chordate body plan. 

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Genomics bridges the gap between evolutionary and developmental biology, and can help answer questions of the evolution of developmental mechanisms, thereby revealing contraction and expansion of the genome and suggesting mechanisms for evolution of both developmental functions and genome architecture.

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Comparisons of developmental gene expression and neuroanatomy between vertebrates and the basal chordate amphioxus indicate that these vertebrate features were built on a foundation already present in the ancestral chordate.

Developmental Constraints on Vertebrate Genome Evolution

Genes expressed early in development in zebrafish and mouse have a more dramatic effect of knock-out or mutation and are more likely to revert to single copy after whole genome duplication, relative to genes expressed late, which supports high constraints on early stages of vertebrate development.

Ancestral Vascular Lumen Formation via Basal Cell Surfaces

It is discovered that in the invertebrate cephalochordate amphioxus, the basement membranes of endoderm and mesoderm line the lumen of the major vessels, namely aorta and heart, and that basal cell surfaces can form a vascular lumen filled with ECM.

Head organization and the head/trunk relationship in protochordates: problems and prospects.

  • T. Lacalli
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  • 2008
The morphogenetic growth process that reestablishes symmetry in late-stage larvae can now be seen, at least in part, as a recapitulation of past evolutionary events, and this has important implications for the origin and basic organization of the brain.

Evolution of eukaryotic genome architecture: Insights from the study of a rapidly evolving metazoan, Oikopleura dioica

Analysis of the O. dioica genome suggests that non‐adaptive forces such as elevated mutation rates might influence the evolution of genome architecture and may be exploited for synthetic biology applications, such as generation of orthogonal splicing systems.

Two Rounds of Whole-Genome Duplication: Evidence and Impact on the Evolution of Vertebrate Innovations

The impact of the 2R-WGD may not be related to the immediate origin of vertebrate innovations, but to the subsequent diversification of a wide variety of complex structures that facilitated the successful radiation of vertebrates.

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