منابع مشابه
Chordate Anatomy
of the process of growing old as it has been seen by twenty-four top-flight investigators. Each author presents the evidence from his own field of the slowing of physiological processes during the passage of time in all forms of life from plants, through protozoa and invertebrates, to mammals and man. Some attention is paid to personality and to psychological factors, as well as to the more obv...
متن کاملDevelopment, Metamorphosis, Morphology and Diversity: The Evolution of Chordate muscles and the Origin of Vertebrates.
Recent findings that urochordates are the closest sister-group of vertebrates have dramatically changed our understanding of chordate evolution and vertebrate origins. To continue to deepen understanding of chordate evolution and diversity, in particular the morphological and taxonomical diversity of the vertebrate clade, one must explore the origin, development and comparative anatomy of not o...
متن کاملEnteropneusts and chordate evolution
The pathway by which the chordates evolved from lower animal groups remains elusive [1,2]. Recently, molecular evidence has shed light on the problem, suggesting that chordates share a common body plan with articulates (arthropods and annelids); that notoneuralian chordates may have inverted their dorsoventral body axis while evolving from a gastroneuralian ancestor [3,4]; and that insect and v...
متن کاملThe chordate ParaHox cluster
SNX1 is enriched on highly curved tubular profiles that emerge from the PtdIns3P-enriched endosome. To achieve such targeting SNX1 employs a combination of binding domains; its PX domain binds PtdIns3P, whilst another domain, a Bin/Amphiphysin/Rvs (BAR) domain, binds to highly curved membranes. By combining these modules, SNX1 can correctly localise to a sub-domain of the endosome. Interestingl...
متن کاملPlacoderm muscles and chordate interrelationships.
Trinajstic et al. (2007) reported exceptionally preserved soft tissues in two placoderm fish from the Devonian of Australia. This exciting finding presents fresh morphological data with a bearing on an old phylogenetic problem: deep branching structure within the vertebrate tree. Trinajstic et al. (2007) show that axial muscle blocks in the placoderm Austroptyctodus more closely resemble those ...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/257630b0