Download or read book Morphogenesis of Skin Pattern Geometry in Birds written by Camille Curantz and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural patterns constitute one of the most diverse features observed in wild animals. The development of such patterns requires a series of morphogenetic events involving a differential response of a naïve tissue to chemical and mechanical positional cues. To what extent these processes contribute to the shape of the natural variation remains unclear. In birds, feather primordia are implanted in typical geometries which vary between birds in primordia size, spacing and pattern regularity. It has been shown that the development of the feather array surely involves self-organising processes. Such processes rely on molecular and cellular factors that cumulate and cooperate temporally and spatially in the developing skin. We showed that the patterning of feather primordia involves prior regionalisation of the skin into competent domains forming a specie-specific pre-pattern that influences the resulting pattern. The comparative description of the local variation of the feather array in these birds according to their initial competent domains shows that variation in the amplitude of dermal cell anisotropy correlates with variation in pattern regularity. Using ex vivo perturbations of skin architecture by an inhibitor of actin filament polymerisation, I showed that the anisotropy of dermal cells prior to feather primordia formation can be seen a readout of the competent state of the tissue to form a regular pattern. These results provide insights into the cellular basis of self-organisation and demonstrate that tissue morphology, constrain the cell response to the positional cues and contribute to shape the variation of the geometry of the feather array observed in nature.
Download or read book Molecular Geometry of Body Pattern in Birds written by Antonio Lima-de-Faria and published by Springer Science & Business Media. This book was released on 2012-03-14 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: After having read this book you will never see birds in the same way again. The unexpected patterns displayed by a bird’s body have been seen as bizarre events that demanded little attention or were described as ‘amazing curiosities’. None of these surprising features seem to be fortuitous. They appear to be an integral part of a rigid order and a coherent geometry, which is directed by simple gene interactions and molecular cascades occurring at various cellular levels, and at different times, during the organism’s development. A novel geometry unfolds in front of your eyes, giving the body configurations another meaning. Lima-de-Faria is Professor Emeritus of Molecular Cytogenetics at Lund University, Lund, Sweden. This is his sixth book dealing with the molecular organization of the chromosome and its implications for the understanding of the mechanisms responsible for biological evolution.
Download or read book Molecular Geometry of Body Pattern in Birds written by Antonio Lima-de-Faria and published by Springer Science & Business Media. This book was released on 2012-03-19 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: After having read this book you will never see birds in the same way again. The unexpected patterns displayed by a bird’s body have been seen as bizarre events that demanded little attention or were described as ‘amazing curiosities’. None of these surprising features seem to be fortuitous. They appear to be an integral part of a rigid order and a coherent geometry, which is directed by simple gene interactions and molecular cascades occurring at various cellular levels, and at different times, during the organism’s development. A novel geometry unfolds in front of your eyes, giving the body configurations another meaning. Lima-de-Faria is Professor Emeritus of Molecular Cytogenetics at Lund University, Lund, Sweden. This is his sixth book dealing with the molecular organization of the chromosome and its implications for the understanding of the mechanisms responsible for biological evolution.
Download or read book Branching Morphogenesis written by Jamie Davies and published by Springer Science & Business Media. This book was released on 2007-03-20 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Branching morphogenesis, the creation of branched structures in the body, is a key feature of animal and plant development. This book brings together, for the first time, expert researchers working on a variety of branching systems to present a state-of-the-art view of the mechanisms that control branching morphogenesis. Systems considered range from single cells, to blood vessel and drainage duct systems to entire body plans, and approaches range from observation through experiment to detailed biophysical modelling. The result is an integrated overview of branching.
Download or read book Journal of Embryology and Experimental Morphology written by and published by . This book was released on 1984 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird Friendly Building Design written by Christine Sheppard and published by . This book was released on 2015-11-01 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Feathers written by Christian Foth and published by Springer Nature. This book was released on 2020-03-11 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feathers are one of the most unique characteristics of modern birds and represent the most complex and colourful type of skin derivate within vertebrates, while also fulfilling various biological roles, including flight, thermal insulation, display, and sensory function. For years it was generally assumed that the origin of flight was the main driving force for the evolution of feathers. However, various discoveries of dinosaur species with filamentous body coverings, made over the past 20 years, have fundamentally challenged this idea and produced new evolutionary scenarios for the origin of feathers. This book is devoted to the origin and evolution of feathers, and highlights the impact of palaeontology on this research field by reviewing a number of spectacular fossil discoveries that document the increasing morphological complexity along the evolutionary path to modern birds. Also featuring chapters on fossil feather colours, feather development and its genetic control, the book offers a timely and comprehensive overview of this popular research topic.
Download or read book Symmetries of Nature written by Klaus Mainzer and published by Walter de Gruyter. This book was released on 2013-12-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evo Devo of Color Pattern Formation written by Ricardo Mallarino and published by Frontiers Media SA. This book was released on 2021-11-01 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2006 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Stability And Morphogenesis written by Rene Thom and published by CRC Press. This book was released on 2018-03-05 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 2018. Routledge is an imprint of Taylor & Francis, an Informa company.
Download or read book Origin s of Design in Nature written by Liz Swan and published by Springer Science & Business Media. This book was released on 2012-08-27 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: Origin(s) of Design in Nature is a collection of over 40 articles from prominent researchers in the life, physical, and social sciences, medicine, and the philosophy of science that all address the philosophical and scientific question of how design emerged in the natural world. The volume offers a large variety of perspectives on the design debate including progressive accounts from artificial life, embryology, complexity, cosmology, theology and the philosophy of biology. This book is volume 23 of the series, Cellular Origin, Life in Extreme Habitats and Astrobiology. www.springer.com/series/5775
Download or read book The Eukaryote Genome in Development and Evolution written by John Bernard and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'The mind unlearns with difficulty what has long been impressed upon it. ' Seneca Reductionism, is, without question, the most successful analytical approach available to the experimental scientist. With the advent of techniques for cloning and sequencing DNA, and the development of a variety of molecular probes for localizing macromolecules in cells and tissues, the biologist now has available the most powerful reductionist tools ever invented. The application of these new technologies has led to a veritable explosion of facts regarding the types and organization of nucleotide sequences present in the genomes of eukaryotes. These data offer a level of precision and predictability which is unparalleled in biology. Recombinant DNA techniques were initially developed to gather information about the structure and organization of the DNA sequences within a genome. The power and potential of these techniques, however, extend far beyond simple data collection of this kind. In an attempt to use the new technology as a basis for analyzing development and evolution, attention was first focused on the topic of gene regulation, an approach that had proven so successful in prokaryotes. It is now clear that this has not been an adequate approach. Lewin (1984) has quoted Brenner as stating 'at the beginning it was said that the answer to the understanding of development was going to come from a knowledge of the molecular mechanisms of gene control. I doubt whether anyone believes this any more.
Download or read book Developmental Pathology of the Embryo and Fetus written by James E. Dimmick and published by Lippincott Williams & Wilkins. This book was released on 1992 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: An illustrated textbook which describes the developmental pathology of the embryonic, foetal and perinatal periods. The first half of the book discusses such topics as normal development, concepts of embryo-foetal disease and dysmorphology, metabolic, infectious, neoplastic and placental disorders, and the pathology of abortions and multiple gestation. The second half focuses on systemic pathology. The book concludes by examining the autopsy of foetus and embryo and examination of the placenta.
Download or read book Creativity in the Bronze Age written by Lise Bender Jørgensen and published by Cambridge University Press. This book was released on 2018-01-18 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Creativity is an integral part of human history, yet most studies focus on the modern era, leaving unresolved questions about the formative role that creativity has played in the past. This book explores the fundamental nature of creativity in the European Bronze Age. Considering developments in crafts that we take for granted today, such as pottery, textiles, and metalwork, the volume compares and contrasts various aspects of their development, from the construction of the materials themselves, through the production processes, to the design and effects deployed in finished objects. It explores how creativity is closely related to changes in material culture, how it directs responses to the new and unfamiliar, and how it has resulted in changes to familiar things and practices. Written by an international team of scholars, the case studies in this volume consider wider issues and provide detailed insights into creative solutions found in specific objects.
Download or read book The Story of Post Modernism written by Charles Jencks and published by John Wiley & Sons. This book was released on 2012-05-25 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: In The Story of Post-Modernism, Charles Jencks, the authority on Post-Modern architecture and culture, provides the defining account of Post-Modern architecture from its earliest roots in the early 60s to the present day. By breaking the narrative into seven distinct chapters, which are both chronological and overlapping, Jencks charts the ebb and flow of the movement, the peaks and troughs of different ideas and themes. The book is highly visual. As well as providing a chronological account of the movement, each chapter also has a special feature on the major works of a given period. The first up-to-date narrative of Post-Modern Architecture - other major books on the subject were written 20 years ago. An accessible narrative that will appeal to students who are new to the subject, as well as those who can remember its heyday in the 70s and 80s.
Download or read book Mathematical Biophysics written by Andrew Rubin and published by Springer Science & Business Media. This book was released on 2013-11-26 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents concise descriptions and analysis of the classical and modern models used in mathematical biophysics. The authors ask the question "what new information can be provided by the models that cannot be obtained directly from experimental data?" Actively developing fields such as regulatory mechanisms in cells and subcellular systems and electron transport and energy transport in membranes are addressed together with more classical topics such as metabolic processes, nerve conduction and heart activity, chemical kinetics, population dynamics, and photosynthesis. The main approach is to describe biological processes using different mathematical approaches necessary to reveal characteristic features and properties of simulated systems. With the emergence of powerful mathematics software packages such as MAPLE, Mathematica, Mathcad, and MatLab, these methodologies are now accessible to a wide audience.
