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Topic: Ontogeny


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In the News (Sun 16 Jun 19)

  
  Ontogeny
Ontogeny is the history of the individual organism, phylogeny the history of the race or lineage (the linnean taxa or cladistic tree).
Ontogeny can be the history of the universe, or the development of the psyche, or even, as indicate by the above Theosophical diagram, the evolution of the soul, spanning many lifetimes.
On a somewhat smaller scale, the ontogeny of the universe is the totality of the phylogenies of the each and all of the parts of the universe - atoms, molecules, stars and planets, rocks and bacteria and plants and animals and genes and memes and all the rest.
www.kheper.net /ontogeny   (417 words)

  
  Ontogeny Pharmaceuticals
Ontogeny Pharmaceuticals intends to become a corporate leader in the development of clinically meaningful therapeutics for this currently underserved population.
Ontogeny identifies drugs currently in development for other indications, that may interact with known target pathways responsible for the pathogenesis of a variety of neurodevelopmental disorders.
Ontogeny seeks to partner with the sponsoring companies to test and develop these drugs for the therapy of congenital disorders for which there are currently few or no therapeutic options.
www.ontogenypharm.com   (103 words)

  
 Ontogeny and Phylogeny (Stephen Jay Gould) - review
Ontogeny and Phylogeny is a rather different kind of book (it has more in common with Time's Arrow, Time's Cycle than the essays), but it still has the characteristic Gould feel to it.
The idea that the development of individuals is a progression through adult ancestral forms, epitomised in the saying "ontogeny recapitulates phylogeny", has played an important part in the history of biology.
Ontogeny and Phylogeny is divided into two roughly equal sections.
www.dannyreviews.com /h/Ontogeny_and_Phylogeny.html   (491 words)

  
 Ontogeny, Functional Ecology, and Evolution of Bats - Cambridge University Press
Ontogeny, Functional Ecology and Evolution of Bats is a unique reference work by bat biologists who emphasize the importance of understanding ontogeny in analyses of evolution and ecology.
Ontogeny of the chiropteran basicranium, with reference to the Indian false vampire bat Megaderma lyra J. Wible and D. Davis; 8.
Ontogeny and evolution of the hindlimb and calcar: assessing phylogenetic trends R. Adams and K. Thibault; 11.
www.cambridge.org /catalogue/catalogue.asp?isbn=0511059795   (439 words)

  
 Ontogeny and Phylogeny
Note that it also shows von Baer's Law; when ontogeny recapitulates phylogeny, von Baer's Law is also observed.
It turns out that for some characterstics the ontogeny of the trait does go through stages much like the adult forms of the ancestors of the species with the trait-- that is, ontogeny does recapitulate phylogeny.
when drawing phylogenies to show that ontogeny does, or does not, recapitulate phylogeny, be sure to create groups within which it is easy to identify the evolutionary sequence from primitive to derived.
www.utm.edu /departments/cens/biology/rirwin/391/391OntogPhylog.htm   (1764 words)

  
 Ernst Haeckel
Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the laws of heredity and adaptation...
Experimental morphologists and biologists have shown that there is not a one-to-one correspondence between phylogeny and ontogeny.
Although a strong form of recapitulation is not correct, phylogeny and ontogeny are intertwined, and many biologists are beginning to both explore and understand the basis for this connection.
www.ucmp.berkeley.edu /history/haeckel.html   (697 words)

  
 Ontogeny, Phylogeny and the Origin of Biological Information
In a clear demonstration of his rejection of Darwinism, he wrote: The laws of the organic world are the same whether we are dealing with the development of an individual (ontogeny) or that of a paleontological series (phylogeny).
Accordingly, I have found the acceptance of the existence of preformed laws and information to be a necessary and liberating asset in the ongoing search for ultimate truth concerning the two greatest mysteries in all of biological science: ontogeny and phylogeny.
The several parallels that exist between epigenesis and preformation in both ontogeny (development) and phylogeny (evolution) are discussed.
www.uvm.edu /~jdavison/ontogeny.html   (2999 words)

  
 MySpace.com - ONTOGENY - SAN FRANCISCO, US - Death Metal / Grindcore / Black Metal - www.myspace.com/ontogenyband
Ontogeny is San Francisco based, brutal technical death metal, started in 2005 by Nate Vennarucci (Sol Asunder, Anomalous).
After recording several low quality and unnappealing demos, Ontogeny found the likes of talented vocalist Mica Maniac to record the first full length album, "Pillars of Perversion".
Hi there ONTOGENY first of all we'd like to say thanks for being our myspace pal.
www.myspace.com /ontogenyband   (740 words)

  
 Trilobite Ontogeny
Recent work on the ontogeny of Proetida by Rudy Lerosey-Aubril has resulted in advances in our understanding of the superfamilies of the Proetida, and comprehensive compilations of the literature on these and other trilobite larvae.
I heartily encourage interested readers to consult his webpages on The Ontogeny of Trilobites.
Fortey, R.A. Ontogeny, hypostome attachment, and trilobite classification.
trilobites.info /ontogeny.htm   (1710 words)

  
  Evolutionary Modifications of Ontogeny: Heterochrony and Beyond - Science - RedOrbit
The ambiguity in precise definition means that any modification to ontogeny failing to meet the criterion of heterochrony is likely to be considered a case of heterotopy, which could devolve into a virtually meaningless concept (a wastebasket for cases of "nonheterochrony").
If a structure undergoes migration during ontogeny, then an evolutionary difference in its location may alternatively be interpretable in terms of temporal modification of the migratory path, and/or in terms of repatterning of the migratory path.
Similarly, the transformation of walking leg to maxilliped during the ontogeny of Porcellio scaber (Abzhanov and Kaufman 1999) represents a novel heterotypic change introduced at a relatively late ontogenetic stage of this isopod (assuming that this transformation was not present in the ontogeny of its ancestor).
www.redorbit.com /news/display?id=233851&source=r_science   (8471 words)

  
 BIOGEN AND ONTOGENY SIGN COLLABORATIVE AGREEMENT TO DEVELOP 'HEDGEHOG' PROTEINS
Ontogeny is harnessing these molecules and mechanisms to focus on the regeneration of destroyed or damaged cells.
Ontogeny is the leader in the pioneering field of developmental biology.
Ontogeny is commercializing therapeutics for neurological diseases, including Parkinson's and Alzheimer's, as well as diabetes and bone and cartilage problems, including osteoporosis and fractures.
www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/23555&EDATE=   (706 words)

  
 Biogen and Ontogeny Extend Hedgehog Protein Research Collaboration
CAMBRIDGE, Mass., Feb. 23 /PRNewswire/ -- Biogen, Inc. (Nasdaq: BGEN) and Ontogeny, Inc., a privately held biotechnology company and leader in the field of developmental biology, today announced the extension and expansion of their existing agreement to collaborate on the discovery and commercialization of three cell differentiation factors from the Hedgehog gene family.
Ontogeny has strong core technologies, proprietary positions and solid data validating the role of the hedgehog protein family.
Ontogeny, Inc., located in Cambridge, MA, and founded in 1994, is a privately held company whose mission is to be the preeminent biopharmaceutical company utilizing developmental biology to create therapeutics that will significantly improve the quality of life by activating the body's ability to repair and regenerate.
www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-23-1999/0000876297&EDATE=   (586 words)

  
 Recapitulation theory Summary
The terms ontogeny and phylogeny are grouped together frequently because of the fundamental biogenetic law espoused by the German scientist Ernst Heinrich Philip August Haeckel (1834-1919).
In biology, ontogeny is the embryonal development process of a certain species, and phylogeny a species' evolutionary history.
Ontogeny is the development of the embryos of a given species; phylogeny is the evolutionary history of a species.
www.bookrags.com /Recapitulation_theory   (2873 words)

  
 Amazon.ca: Ontogeny and Phylogeny: Books: Stephen Jay Gould   (Site not responding. Last check: )
Heterochrony--changes in developmental timing, producing parallels between ontogeny and phylogeny--is shown to be crucial to an understanding of gene regulation, the key to any rapprochement between molecular and evolutionary biology.
Ontogeny and Phylogeny by Stephen Jay Gould is an enlightening book filled with facts, history, knowledge, science, sociology, biology and mixed with this is the Gould Factor.
The illustrative bits of science follow as he discusses heterochrony and paedomophosis, showing how phylogeny relates to ontogeny, which I will grossly oversimplify: ontogeny selectively draws from phylogeny with occasional complete departures that may or may not be helpful (which is also true of the retained bits of phylogeny).
www.amazon.ca /Ontogeny-Phylogeny-Stephen-Jay-Gould/dp/0674639413   (1862 words)

  
 Videotape: Conidium Ontogeny in Hyphomycetes
This is one of the commonest kinds of conidium ontogeny, found in 360 of the 1250 known genera of Hyphomycetes.
This ontogeny is rare, having been observed in only 6 of the 1250 known genera of Hyphomycetes.
This is a common and successful mode of conidium ontogeny, having been reported in 260 of the 1250 known genera of Hyphomycetes, including some of the most successful of all anamorphs, such as Penicillium, Aspergillus, Trichoderma, etc. Note that the conidiogenous cell does not become either longer or shorter during the formation of many conidia.
www.mycolog.com /video.html   (537 words)

  
 Ontogeny
Put another way, ontogeny is "...the history of maintenance of [the system's] identity through continuous autopoiesis in the physical space." (Varela, 1979a, p.
Combined with the indistinguishability of internal vs. external perturbations, this intertwining of structural determination (synchronic state transformation) and ontogenic coupling (diachronic course of coupling) into a single ontogeny induces: (1) a complexity or richness of potential behaviors; and (2) a complexity of potential descriptions for those behaviors.
As such, structural / ontogenic determinism cannot be equated with strict causal determinism unless the observer has full and unequivocal access to both the structural state and ontogenic history of the observed in addition to access to unequivocal predictive rules governing the observed's transformations.
www.imprint.co.uk /thesaurus/ontogeny.htm   (282 words)

  
 Ontogeny of estrogen receptor messenger ribonucleic acid expression in the postnatal rat uterus.   (Site not responding. Last check: )
Ontogeny of estrogen receptor messenger ribonucleic acid expression in the postnatal rat uterus.
To further examine the role of the estrogen receptor (ER) in the mediation of uterine development, we analyzed the ontogeny of ER mRNA expression in the postnatal rat uterus using in situ hybridization.
Delineation of the temporal and cell-type specific pattern of ER mRNA ontogeny in the postnatal rat uterus furthers our understanding of the molecular basis of both endogenous and exogenous estrogen effects on uterine growth and development.
www.arclab.org /medlineupdates/abstract_8949877.html   (250 words)

  
 Ontogeny
In the evolved ontogeny of vertebrates the limb appears as a mere bud in the early embryo; but if its ontogeny were less suppressed, it would show segmentation just as the axial somites do at this stage.
The problem is that ontogeny is observed as a gradual process of increasing complexity in every sense, and this fits all too easily with a conception of evolution as gradually increasing complexity in every sense.
Under the proposed model ontogeny is a matter of the suppression of the ontogeny of a fundamental complex structure--the structure which is represented semi-schematically in Fig.2.
home.inreach.com /cliff_lundberg/ontogeny.html   (639 words)

  
 Reference.com/Encyclopedia/Ontogeny
Ontogeny (also ontogenesis or morphogenesis) describes the origin and the development of an organism from the fertilized egg to its mature form.
The idea that ontogeny recapitulates phylogeny, that is, that the development of an organism exactly mirrors the evolutionary development of the species, is discredited today.
However the phenomenon of recapitulation, in which a developing organism will for a time show a similar trait or attribute to that of an ancestral species, only to have it disappear at a later stage is well documented.
www.reference.com /browse/wiki/Ontogenesis   (190 words)

  
 Evolution of cranial ontogeny in hominoid primates   (Site not responding. Last check: )
The aim is to analyze the ontogenetic basis of the phyletic diversification of hominoid taxa through the establishment of links between the evolutionary modification of ontogenetic programs and the emergence of taxon-specific morphologies.
Methods of geometric morphometrics are used to quantify and visualize patterns of morphological change during ontogeny, and to compare taxa with respect to their spatial and temporal patterns of ontogeny.
The aim of these analyses is to identify temporospatial modifications of taxon-specific patterns of ontogeny and to draw inferences on the evolutionary modification of the underlying ontogenetic processes.
www.ifi.unizh.ch /~zolli/res_db/EvolCranDev.htm   (306 words)

  
 Ontogeny of thyrotropin-releasing hormone and histidyl proline diketopiperazine in the rat central nervous system and ...   (Site not responding. Last check: )
Ontogeny of thyrotropin-releasing hormone and histidyl proline diketopiperazine in the rat central nervous system and pancreas -- Lamberton et al.
Ontogeny of thyrotropin-releasing hormone and histidyl proline diketopiperazine in the rat central nervous system and pancreas
The ontogeny of TRH and of a proposed TRH metabolite, histidyl proline
endo.endojournals.org /cgi/content/abstract/115/6/2400?ck=nck   (301 words)

  
 ››› buch.de - bücher - versandkostenfrei - The Ontogeny of Inform-PB - Susan Oyama   (Site not responding. Last check: )
››› buch.de - bücher - versandkostenfrei - The Ontogeny of Inform-PB - Susan Oyama
The Ontogeny of Information is a critical intervention into the ongoing and perpetually troubling nature-nurture debates surrounding human development.
Ontogeny, then, is the result of dynamic and complex interactions in multileveled developmental systems.

The Ontogeny of Information challenges specialists in the fields of developmental biology, philosophy of biology, psychology, and sociology, and even nonspecialists, to reexamine the existing nature-nurture dichotomy as it relates to the history and formation of organisms.

www.buch.de /buch/00895/099_the_ontogeny_of_inform_pb.html   (301 words)

  
 FFS! » ontogeny   (Site not responding. Last check: )
The mutations in a given population that makes them distinct could be literally anything: Succeptability to a disease or genetic disorder, slight differences in morphological traits, organ size, color differences, growth rate, food preference, etc. But the subspecies can still interbreed with other subspecies in the species category (species, species, species).
It would, however, be advantageous if the balance and rate of expression at a young age could be maintained into adulthood and beyond (which is probably what Morrison is talking about; he just worded it strangely).
You are currently browsing the archives for the ontogeny category.
fightingforscience.com /category/biology/ontogeny   (776 words)

  
 Ontogeny of hepatic enzymes involved in serine- and folate-dependent one-carbon metabolism in rabbits -- Thompson et ...
Ontogeny of hepatic enzymes involved in serine- and folate-dependent one-carbon metabolism in rabbits -- Thompson et al.
Ontogeny of hepatic enzymes involved in serine- and folate-dependent one-carbon metabolism in rabbits
Ontogeny of serine hydroxymethyltransferase isoenzymes in fetal sheep liver, kidney and placenta.
ajpgi.physiology.org /cgi/content/full/280/5/G873   (3750 words)

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