Concept

Chordate

Related publications (16)

Reaction wavefront theory of notochord segment patterning

The vertebrate axis is segmented into repetitive structures, the vertebrae. In fish, these segmented structures are thought to form from the paraxial mesoderm and the adjacent notochord. Recent work revealed an autonomous patterning mechanism in the zebraf ...

FRONTIERS MEDIA SA2022

"Fill the Gap" - Un tiny-quartier à Pully

Les lieux communément appelés « dents-creuses » en milieu urbain, désignent des petits lots vierges de construction entre deux bâtiments ; ils sont souvent les résidus d’une ancienne zone agricole. Cette expression pourrait s’appliquer à des parcelles de p ...

2020

Control of Bio-Inspired Sprawling Posture Quadruped Robots with an Actuated Spine

Tomislav Horvat

Sprawling posture robots are characterized by upper limb segments protruding horizontally from the body, resulting in lower body height and wider support on the ground. Combined with an actuated segmented spine and tail, such morphology resembles that of s ...

EPFL2018

The mouse genome displays highly dynamic populations of KRAB-zinc finger protein genes and related genetic units

Didier Trono, Julien Léonard Duc, Marco Cassano, Michaël Imbeault, Gabriela Ecco, Annamaria Kauzlaric

KRAB-containing poly-zinc finger proteins (KZFPs) constitute the largest family of transcription factors encoded by mammalian genomes, and growing evidence indicates that they fulfill functions critical to both embryonic development and maintenance of adul ...

Public Library of Science2017

Conservation and Divergence of Regulatory Strategies at Hox Loci and the Origin of Tetrapod Digits

Denis Duboule, Marion Leleu, Daniël Noordermeer

The evolution of tetrapod limbs from fish fins enabled the conquest of land by vertebrates and thus represents a key step in evolution. Despite the use of comparative gene expression analyses, critical aspects of this transformation remain controversial, i ...

Public Library Science2014

Micro- to nanostructure and geochemistry of extant crinoidal echinoderm skeletons

Anders Meibom, Jaroslaw Hubert Stolarski

This paper reports the results of micro- to nanostructural and geochemical analyses of calcitic skeletons from extant deep-sea stalked crinoids. Fine-scale (SEM, FESEM, AFM) observations show that the crinoid skeleton is composed of carbonate nanograins, a ...

Wiley-Blackwell2013

The segmentation clock is an oscillating genetic network thought to govern the rhythmic and sequential subdivision of the elongating body axis of the vertebrate embryo into somites: the precursors of the segmented vertebral column. Understanding how the rh ...

2012

Stable carbon and oxygen isotope compositions of extant crinoidal echinoderm skeletons

Anders Meibom, Jaroslaw Hubert Stolarski

The variability of delta C-13 and delta O-18 was determined within the columnal facet of individual ossicles, within different regions of skeletons and within bulk skeletons of extant stalked crinoids. Isotopic compositions of individual ossicles may vary ...

2012

A genetic approach to the transcriptional regulation of hox gene clusters

Denis Duboule

The evolution of vertebrate genomes was accompanied by an astounding increase in the complexity of their regulatory modalities. Genetic redundancy resulting from large-scale genome duplications at the base of the chordate tree was repeatedly exploited by t ...

2011

Evolutionary plasticity of segmentation clock networks

Andrew Charles Oates

The vertebral column is a conserved anatomical structure that defines the vertebrate phylum. The periodic or segmental pattern of the vertebral column is established early in development when the vertebral precursors, the somites, are rhythmically produced ...

2011

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