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Books > Science & Mathematics > Biology, life sciences > Developmental biology
How do radically new kinds of organisms evolve? The Origin of Higher Taxa addresses this essential question, specifically whether the emergence of higher taxa such as orders, classes, and phyla are the result of normal Darwinian evolution acting over a sufficiently long period of time, or whether unusual genetic events and particular environmental and ecological circumstances are also involved. Until very recently, the combination of an incomplete fossil record and a limited understanding about how raw mutations lead via modified ontogenic processes to significant phenotypic changes, effectively stymied scientific debate. However, it is now timely to revisit the question in the light of the discovery of considerable new fossil material (and new techniques for studying it), together with significant advances in our understanding of phenotypic development at the molecular level. This novel text incorporates evidence from morphology, palaeobiology, developmental biology, and ecology, to review those parts of the fossil record that illustrate something of the pattern of acquisition of derived characters in lineages leading to actual higher taxa as well as the environmental conditions under which they occurred. The author's original ideas are set within the context of a broad and balanced review of the latest research in the field. The result is a book which provides a concise, authoritative, and accessible overview of this fascinating subject for both students and researchers in evolutionary biology and palaeontology.
Sexual reproduction is a fundamental aspect of life. It is defined by the occurrence of meiosis and the fusion of two gametes of different sexes or mating types. Sex-determination mechanisms are responsible for the sexual fate and development of sexual characteristics in an organism, be it a unicellular alga, a plant, or an animal. In many cases, sex determination is genetic: males and females have different alleles or different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex may be determined by environmental (e.g. temperature) or social variables (e.g. the size of an organism relative to other members of its population). Surprisingly, sex-determination mechanisms are not evolutionarily conserved but are bewilderingly diverse and appear to have had rapid turnover rates during evolution. Evolutionary biologists continue to seek a solution to this conundrum. What drives the surprising dynamics of such a fundamental process that always leads to the same outcome: two sex types, male and female? The answer is complex but the ongoing genomic revolution has already greatly increased our knowledge of sex-determination systems and sex chromosomes in recent years. This novel book presents and synthesizes our current understanding, and clearly shows that sex-determination evolution will remain a dynamic field of future research. The Evolution of Sex Determination is an advanced, research level text suitable for graduate students and researchers in genetics, developmental biology, and evolution.
Over the past decade, advances in both molecular developmental biology and evolutionary ecology have made possible a new understanding of organisms as dynamic systems interacting with their environments. This innovative book synthesizes a wealth of recent research findings to examine how environments influence phenotypic expression in individual organisms (ecological development or 'eco-devo'), and how organisms in turn alter their environments (niche construction). A key argument explored throughout the book is that ecological interactions as well as natural selection are shaped by these dual organism-environment effects. This synthesis is particularly timely as biologists seek a unified contemporary framework in which to investigate the developmental outcomes, ecological success, and evolutionary prospects of organisms in rapidly changing environments. Organism and Environment is an advanced text suitable for graduate level students taking seminar courses in ecology, evolution, and developmental biology, as well as academics and researchers in these fields.
Is it possible to explain and predict the development of living things? What is development? Articulate answers to these seemingly innocuous questions are far from straightforward. To date, no systematic, targeted effort has been made to construct a unifying theory of development. This novel work offers a unique exploration of the foundations of ontogeny by asking how the development of living things should be understood. It explores the key concepts of developmental biology, asks whether general principles of development can be discovered, and examines the role of models and theories. The two editors (one a biologist with long interest in the theoretical aspects of his discipline, the other a philosopher of science who has mainly worked on biological systems) have assembled a team of leading contributors who are representative of the scientific and philosophical community within which a diversity of thoughts are growing, and out of which a theory of development may eventually emerge. They analyse a wealth of approaches to concepts, models and theories of development, such as gene regulatory networks, accounts based on systems biology and on physics of soft matter, the different articulations of evolution and development, symbiont-induced development, as well as the widely discussed concepts of positional information and morphogenetic field, the idea of a 'programme' of development and its critiques, and the long-standing opposition between preformationist and epigenetic conceptions of development. Towards a Theory of Development is primarily aimed at students and researchers in the fields of 'evo-devo', developmental biology, theoretical biology, systems biology, biophysics, and the philosophy of science.
Is it possible to explain and predict the development of living things? What is development? Articulate answers to these seemingly innocuous questions are far from straightforward. To date, no systematic, targeted effort has been made to construct a unifying theory of development. This novel work offers a unique exploration of the foundations of ontogeny by asking how the development of living things should be understood. It explores the key concepts of developmental biology, asks whether general principles of development can be discovered, and examines the role of models and theories. The two editors (one a biologist with long interest in the theoretical aspects of his discipline, the other a philosopher of science who has mainly worked on biological systems) have assembled a team of leading contributors who are representative of the scientific and philosophical community within which a diversity of thoughts are growing, and out of which a theory of development may eventually emerge. They analyse a wealth of approaches to concepts, models and theories of development, such as gene regulatory networks, accounts based on systems biology and on physics of soft matter, the different articulations of evolution and development, symbiont-induced development, as well as the widely discussed concepts of positional information and morphogenetic field, the idea of a 'programme' of development and its critiques, and the long-standing opposition between preformationist and epigenetic conceptions of development. Towards a Theory of Development is primarily aimed at students and researchers in the fields of 'evo-devo', developmental biology, theoretical biology, systems biology, biophysics, and the philosophy of science.
Sexual reproduction is a fundamental aspect of life. It is defined by the occurrence of meiosis and the fusion of two gametes of different sexes or mating types. Sex-determination mechanisms are responsible for the sexual fate and development of sexual characteristics in an organism, be it a unicellular alga, a plant, or an animal. In many cases, sex determination is genetic: males and females have different alleles or different genes that specify their sexual morphology. In animals, this is often accompanied by chromosomal differences. In other cases, sex may be determined by environmental (e.g. temperature) or social variables (e.g. the size of an organism relative to other members of its population). Surprisingly, sex-determination mechanisms are not evolutionarily conserved but are bewilderingly diverse and appear to have had rapid turnover rates during evolution. Evolutionary biologists continue to seek a solution to this conundrum. What drives the surprising dynamics of such a fundamental process that always leads to the same outcome: two sex types, male and female? The answer is complex but the ongoing genomic revolution has already greatly increased our knowledge of sex-determination systems and sex chromosomes in recent years. This novel book presents and synthesizes our current understanding, and clearly shows that sex-determination evolution will remain a dynamic field of future research. The Evolution of Sex Determination is an advanced, research level text suitable for graduate students and researchers in genetics, developmental biology, and evolution.
Photochemistry is an important facet in the study of the origin of life and prebiotic chemistry. Solar photons are the unique source of the large amounts of energy likely required to initiate the organisation of matter to produce biological life. The Miller-Urey experiment simulated the conditions thought to be present on the early earth and supported the hypothesis that under such conditions complex organic compounds could be synthesised from simpler inorganic precursors. The experiment inspired many others, including the production of various alcohols, aldehydes and organic acids through UV-photolysis of water vapour with carbon monoxide. This book covers the photochemical aspects of the study of prebiotic and origin of life chemistry an ideal companion for postgraduates and researchers in prebiotic chemistry, photochemistry, photobiology, chemical biology and astrochemistry.
The first photographic and descriptive musculoskeletal atlas of a baby gorilla, this book details the comparative and phylogenetic context of the gross anatomy and evolutionary history of the soft tissue morphology of modern humans and one of their closest relatives. With detailed high-quality photographs of musculoskeletal structures, it provides an updated review of the anatomical variations within gorillas as well as an extensive list of the synonyms used in the literature to designate the structures discussed. It will be of interest to students, teachers, and researchers studying primatology, comparative anatomy, functional morphology, zoology, and physical anthropology.
Infectious fungal diseases continue to take their toll in terms of human suffering and enormous economic losses. Invasive infections by opportunistic fungal pathogens are a major cause of morbidity and mortality in immuno-compromised individuals. At the same time, plant pathogenic fungi have devastating effects on crop production and human health. New strategies for antifungal control are required to meet the challenges posed by these agents, and such approaches can only be developed through the identification of novel biochemical and molecular targets. However, in contrast to bacterial pathogens, fungi display a wealth of lifestyles and modes of infection. This diversity makes it extremely difficult to identify individual, evolutionarily conserved virulence determinants and represents a major stumbling block in the search for common antifungal targets. In order to activate the infection programme, all fungal pathogens must undergo appropriate developmental transitions that involve cellular differentiation and the introduction of a new morphogenetic programme. How growth, cell cycle progression and morphogenesis are co-ordinately regulated during development has been an active area of research in fungal model systems such as budding and fission yeast. By contrast, we have only limited knowledge of how these developmental processes shape fungal pathogenicity, or of the role of the cell cycle and morphogenesis regulators as true virulence factors. This book combines state-of-the-art expertise from diverse pathogen model systems to update our current understanding of the regulation of fungal morphogenesis as a key determinant of pathogenicity in fungi. "
Nowadays, it is widely accepted that there is no single influence (be it nature or nurture) on cognitive development. Cognitive abilities emerge as a result of interactions between gene expression, cortical and subcortical brain networks, and environmental influences. In recent years, our study of neurodevelopmental disorders has provided much valuable information on how genes, brain development, behaviour, and environment interact to influence development from infancy to adulthood. This is the first book to present evidence on development across the lifespan across these multiple levels of description (genetic, brain, cognitive, environmental). In the book, the authors have chosen a well-defined disorder, Williams syndrome (WS), to explore the impact of genes, brain development, behaviour, as well as the individual's environment on development. WS is used as a model disorder to demonstrate the authors approach to understanding development, whilst being presented in comparison to other neurodevelopmental disorders - Autism, Developmental Dyscalculia, Down syndrome, Dyslexia, Fragile X syndrome, Prader-Willi syndrome, Specific Language Impairment, Turner syndrome - to illustrate differences in development across neurodevelopmental disorders. Williams syndrome is particularly informative for exploring development: Firstly, it has been extensively researched at multiple levels: genes, brain, cognition and behaviour, as well as in terms of the difficulties of daily living and social interaction. Secondly, it has been studied across the lifespan, with many studies on infants and toddlers with WS as well as a large number on children, adolescents and adults. The authors also explore a number of domain-general and domain-specific processes in the verbal, non-verbal and social domains, across numerous neurodevelopmental disorders. This illustrates, among other factors, the importance of developmental timing, i.e. that the development of a cognitive skill at a specific timepoint can impact on subsequent development within that domain, but also across domains. In addition, the authors discuss the value of investigating basic-level abilities from as close to the infant start-state as possible, presenting evidence of where cross-syndrome comparisons have shed light on the cascading impacts of subtle similarities and discrepancies in early delay or deviance, on subsequent development. Designed such that readers with an interest in any neurodevelopmental disorder can gain insight into the intricate dynamics of cognitive development, the book covers both theoretical issues and those of clinical relevance. It will be an invaluable reference for any researcher, clinician, student as well as interested parents or teachers wishing to learn about neurodevelopmental disorders from a developmental framework.
Compared to animals, plants have been largely neglected in evolutionary developmental biology. Mainstream research has focused on developmental genetics, while a rich body of knowledge in comparative morphology is still to be exploited. No integrated account is available. In this volume, Minelli fills this gap using the same approach he gave to animals, revisiting traditional concepts and providing an articulated analysis of genetic and molecular data. Topics covered include leaf complexity and the evolution of flower organs, handedness, branching patterns, flower symmetry and synorganization, and less conventional topics such as fractal patterns of plant organization. Also discussed is the hitherto neglected topic of the evolvability of temporal phenotypes like a plant's annual, biennial or perennial life cycle, flowering time and the timing of abscission of flower organs. This will be informative reading for anyone in the field of plant evo-devo, from students to lecturers and researchers.
Moving Beyond Self-Interest is an interdisciplinary volume that discusses cutting-edge developments in the science of caring for and helping others. In Part I, contributors raise foundational issues related to human caregiving. They present new theories and data to show how natural selection might have shaped a genuinely altruistic drive to benefit others, how this drive intersects with the attachment and caregiving systems, and how it emerges from a broader social engagement system made possible by symbiotic regulation of autonomic physiological states. In Part II, contributors propose a new neurophysiological model of the human caregiving system and present arguments and evidence to show how mammalian neural circuitry that supports parenting might be recruited to direct human cooperation and competition, human empathy, and parental and romantic love. Part III is devoted to the psychology of human caregiving. Some contributors in this section show how an evolutionary perspective helps us better understand parental investment in and empathic concern for children at risk for, or suffering from, various health, behavioral, and cognitive problems. Other contributors identify circumstances that differentially predict caregiver benefits and costs, and raise the question of whether extreme levels of compassion are actually pathological. The section concludes with a discussion of semantic and conceptual obstacles to the scientific investigation of caregiving. Part IV focuses on possible interfaces between new models of caregiving motivation and economics, political science, and social policy development. In this section, contributors show how the new theory and research discussed in this volume can inform our understanding of economic utility, policies for delivering social services (such as health care and education), and hypotheses concerning the origins and development of human society, including some of its more problematic features of nationalism, conflict, and war. The chapters in this volume help readers appreciate the human capacity for engaging in altruistic acts, on both a small and large scale.
This textbook provides students with knowledge of neurogenetics, neurogenesis, neuronal specification and function, neuronal networks, learning and memory formation, brain evolution, and neurodegenerative diseases. Students are introduced to topics of classical developmental genetics as well as modern molecular and neurogenetic methods. Using a wealth of examples from current research, the textbook takes a strong applied approach. Using animal models such as Drosophila melanogaster and Caenorhabditis elegans as well as mammalian systems, the interrelationships between genes, neurons, nervous systems, and behaviour under normal and pathological conditions are illustrated. The textbook aims encourage students to address biological questions in neurogenetics and to think about the design of their own experiments. It targets primarily master and graduate students in neurobiology, but is also a valuable teaching tool for instructors in these fields.
Humans and flies look nothing alike, yet their genetic circuits are remarkably similar. Here, Lewis I. Held, Jr compares the genetics and development of the two to review the evidence for deep homology, the biggest discovery from the emerging field of evolutionary developmental biology. Remnants of the operating system of our hypothetical common ancestor 600 million years ago are compared in chapters arranged by region of the body, from the nervous system, limbs and heart, to vision, hearing and smell. Concept maps provide a clear understanding of the complex subjects addressed, while encyclopaedic tables offer comprehensive inventories of genetic information. Written in an engaging style with a reference section listing thousands of relevant publications, this is a vital resource for scientific researchers, and graduate and undergraduate students.
Animal life, now and over the past half billion years, is
incredibly diverse. Describing and understanding the evolution of
this diversity of body plans - from vertebrates such as humans and
fish to the numerous invertebrate groups including sponges,
insects, molluscs, and the many groups of worms - is a major goal
of evolutionary biology. In this book, a group of leading
researchers adopt a modern, integrated approach to describe how
current molecular genetic techniques and disciplines as diverse as
palaeontology, embryology, and genomics have been combined,
resulting in a dramatic renaissance in the study of animal
evolution.
From the cells of aquatic algae to the majestic redwoods towering
100 metres above the California coast, the history of plant
evolution has been one of increasing complexity. The underlying
rationale for this book is to answer the question: How, when land
plant embryos at a few-celled stage are essentially comparable, do
plants achieve such radically different adult phenotypes, from
mosses to tree-ferns, and grasses to oak trees?
Animal phylogeny is undergoing a major revolution due to the
availability of an exponentially increasing amount of molecular
data and the application of novel methods of phylogentic
reconstruction, as well as the many spectacular advances in
palaeontology and molecular developmental biology. Traditional
views of the relationships among major phyla have been shaken and
new, often unexpected, relationships are now being considered. At
the same tiem, the emerging discipline of evolutionary
developmental biology, or 'evo-devo', has offered new insights into
the origin and evolvability of major traits of animal architecture
and life cycle. All these developments call for a revised
interpretation of the pathways along which animal structure and
development has evolved since the origin of the Metazoa.
This fully revised edition of The Neural Crest contains the most current information about this unique structure that has a transient existence in early embryonic life. The ontogeny of the neural crest embodies the most important issues in developmental biology, as the neural crest is considered to have played a crucial role in evolution of the vertebrate phylum. This revised edition includes new data that analyze neural crest ontogeny in murine and zebrafish embryos. Additional features include coverage of advances in our understanding of neural crest cell subpopulation markers, cell lineage analysis, and the introduction of molecular biology to neural crest research. Like its predecessor, this volume is essential reading for students and researchers in developmental biology, cell biology, and neuroscience.
First Minds: Caterpillars, 'Karyotes, and Consciousness presents a novel theory of the origins of mind and consciousness dubbed the Cellular Basis of Consciousness (CBC). It argues that sentience emerged with life itself. The most primitive unicellular species of bacteria are conscious, though it is a sentience of a primitive kind. They have minds, though they are tiny and limited in scope. Hints that cells might be conscious can be found in the writings of a few cell biologists but a fully developed theory has never been put forward before. Other approaches to the origins of consciousness are examined and shown to be seriously or fatally flawed, specifically approaches based on: (a) the assumption that minds are computational and can be captured by an Artificial Intelligence, (b) efforts to discover the neuro-correlates of mental experiences and, (c) looking for consciousness in less complex species by identifying those that have precursors of those neuro-correlates. Reber shows how each of these approaches is shown to be either essentially impossible (the AI models) or so burdened by philosophical and empirical difficulties that they are effectively unworkable. The CBC approach is developed using standard models of evolutionary biology. The remarkable repertoire of single-celled species that micro- and cell-biologists have discovered is reviewed. Bacteria, for example, have sophisticated sensory and perceptual systems, learn, form memories, make decisions based on information about their environment relative to internal metabolic states, communicate with each other, and even show a primitive form of altruism. All such functions are indicators of sentience. Finally, the implications of the CBC model are discussed along with a number of related issues in evolutionary biology, philosophy of mind, the possibility of sentient plants, the ethical repercussions of universal animal sentience, and the long-range impact of adopting the CBC stance.
A structure is an assembly that serves an engineering function. A smart structure is one that serves this function smartly, i.e. by responding adaptively in a pre-designed useful and efficient manner to changing environmental conditions. Adaptive behaviour of one or more materials constituting a smart structure requires nonlinear response. This book describes the three main types of nonlinear-response materials: ferroic materials, soft materials, and nanostructured materials. Information processing by biological and artificial smart structures is also discussed. A smart structure typically has sensors, actuators, and a control system. Progress in all these aspects of smart structures has leant heavily on mimicking Nature, and the all-important notion in this context has been that of evolution. Artificial Darwinian and Lamarckian evolution holds the key to the development of truly smart structures. Modestly intelligent robots are already on the horizon. Projections about the low-cost availability of adequate computing power and memory size indicate that the future really belongs to smart structures. This book covers in a compact format the entire gamut of concepts relevant to smart structures. It should be of interest to a wide range of students and professionals in science and engineering.
What is sex? Has it always existed? What purpose does it serve? Why are there penises and vaginas? These questions are at the very core of Dirty Biology, an erudite (and hilarious) graphic novel that aims to teach you everything you wanted to know about sex-and then some. "Sex" can mean a number of things. It can refer to sex organs, to sex types, to the act of copulation, or to the simple exchange of genetic material. This book explains what we actually mean when we talk about sex and reveals a wealth of astonishing scientific details along the way. For example, did you know that some species can have sex without genitals? And when it comes to genitals, did you know that there's an amazing diversity of these across species? From the evolution of penises and vaginas to far-fetched mating rituals and the shocking consequences of the sex act, Dirty Biology exposes sex for what it is: a lot more interesting and more complicated than the simplistic image we often have of it.
Why do living things and physical phenomena take the form they do? D'Arcy Thompson's classic On Growth and Form looks at the way things grow and the shapes they take. Analysing biological processes in their mathematical and physical aspects, this historic work, first published in 1917, has also become renowned for the sheer poetry of its descriptions. A great scientist sensitive to the fascinations and beauty of the natural world tells of jumping fleas and slipper limpets; of buds and seeds; of bees' cells and rain drops; of the potter's thumb and the spider's web; of a film of soap and a bubble of oil; of a splash of a pebble in a pond.
The advent of genome sequencing and associated technologies has
transformed biologists' ability to measure important classes of
molecules and their interactions. This expanded cellular view has
opened the field to thousands of interactions that previously were
outside the researchers' reach. The processing and interpretation
of these new vast quantities of interconnected data call for
sophisticated mathematical models and computational methods.
Systems biology meets this need by combining genomic knowledge with
theoretical, experimental and computational approaches from a
number of traditional scientific disciplines to create a
mechanistic explanation of cellular systems and processes.
Familiar sciences of biology, physics, chemistry, cybernetics, and computational methods for dealing with vast new data sets of information at molecular and sub-molecular levels are morphing into new sciences. Some exist beneath our line of sight where laws of nature hover between Newtonian and quantum mechanics. New fields of cyber-, bio-, nanotechnology and systems biology raise arcane new concepts. The completed human genome has led to an explosion of interest in genetics and molecular biology. The view of the genome as a network of interacting computational components is well established and here writers explore it in new ways. These systemic approaches are timely in light of the availability of an increasing number of genomic sequences, and the generation of large volumes of biological data by high-throughput methods. Suitable for two-semesters of study, the works surveys genomics principles in the 13 chapters of Vol I, and networks and models in the 14 chapters of Vol II. Both, as a two-book set, will serve as core foundation titles for Dennis Shasha's Series in Systems Biology, establishing the principles and challenges for this emerging field of study. In each chapter world-renowned experts trail-blazing in their respective fields will review corresponding topics as well as current and planned research. Chapters will treat the integrated study and analysis of biological systems by use of data and information about the system components in their entirety, as opposed to the study of individual components in isolation. Systems Biology courses are popping up all over the place and biology, computer science, and bioinformatics programs are the primary potential takers. The editors plan books for a very wide audience, at the same time providing a comprehensive repository of up-to-date overviews and predictions for a number of inter-related sub-fields within this hierarchy. Intended readers include graduate students plus academic and professional researchers of genomics, bioinformatics, molecular biology, biochemistry, bioengineering, and computer systemic approaches to those fields. By comparison, Shasha's first Systems Biology Series title, Amos's Cellular Biology, is a book for technologists using biology as a vehicle to do something else, whereas this is a book about systems and related technologies in service to biologists. The volume editors plan to review or have reviewed, and to edit the invited chapters for content and consistent conceptual level, each chapter contributing uniquely to the key aspects of the Systems Biology hierarchy. A few chapter contents may date after two years, but the majority will endure for longer-term reference use because they treat methodologies and provide sample applications.
The ONLY textbook available on marine mammal physiology, a core topic in Marine Science undergrad teaching Builds on the unique overall theme 'How would you design a marine mammal?' which focuses on what an undergrad student would actually want to know. What would they ask? So rather than "What are the biochemical differences between marine and terrestrial mammals?" the book addresses "How can marine mammals dive for such a long time?" or "How do they stay warm in such cold water?" Organises the Table of Contents into common 'real' student questions. The book thus centres around the point of view of the student. This makes it accessible and student-focused. Consistency across all chapters Provides consistent Power Point slides that teachers can use when they don't know the field well AND that students can use as study guides. Offers Study Questions and future thinking/implications questions. A Driving Question for each chapter is highlighted in a box. A concluding chapter ties up loose ends and consolidates the driving questions from the individual chapters. Contains the contributions of well-respected, prominent scientists in the field. Author bios for each chapter showcase diversity in contributor pool. Focuses on physiological adaptations of marine mammals and connects them with the ecological context, including anthropogenic impacts. Discusses differences that might exist by type of marine mammal, development questions, and behavioral issues. |
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