During animal development the descendants of a single cell form many different tissues and organs in appropriate positions within an embryo. To do this they must recognise their position, and our knowledge of how this is done is examined in this book. It starts by considering how much spatial pattern is already laid down when the egg forms inside the mother, and ends just before the formation of visible organs. Within these limits it considers evidence obtained by a variety of techniques, both experimental and biochemical, and from the embryos of many different animal groups. This breadth of coverage and the amount of detail afforded, particularly to the experimental studies, distinguish it from competing works and will make it an interesting review. Moreover, in the final chapter the author analyzes this evidence in ways which will be new to most readers, and which call into question current ideas about spatial determination.

Advances in our understanding of biological mechanisms have frequently been associated with the development of techniques. In situ hybridisation is a classic case of just such an advance. The technique effectively combines histochemistry with molecular biology and enables the rapid analysis of the distribution of RNA, or DNA, in the tissues. The information gained from this has caused something of a revolution in our understanding of developmental biology, since a fundamental aspect of development is the spatial and temporal expression of genes. In addition the technique has found application in the field of medicine, providing insights into the functioning of healthy tissues and the diagnosis and study of diseases. This book brings together contributions from leaders in the application of in situ hybridisation and guides the would-be exponent through the various options and variations of the technique.

The phenomenon of sexual reproduction in eukaryotes poses a special problem: with each union of gametes, how does the species avoid a doubling of chromosome numbers? The solution that eukaryotes invented, early in their evolutionary history, is a unique form of nuclear division, meiosis. Meiosis serves to reduce chromosome numbers by a factor of two in the gamete or gamete-forming cells, with the result that each gamete (or gamete precursor) has a single copy of each chromosome, the haploid state; the union of gametes then restores the pre-gametic or diploid chromosome number. In this book, Bernard John presents a complete review of meiosis, describing its mechanics, position in the life cycle in different species, genetics and, finally, its significance in eukaryotic evolution. For students and researchers interested in eukaryotic cellular biology and genetics, this book may prove useful. Upper division students and research workers in genetics, cytology, and cell biology will also be able to refer to this book.

Morphogenesis, the set of processes that generate shape and form in the embryo, remains a central area in developmental biology. This book, first published in 1990, provides an overview of the events and mechanisms of morphogenesis, reviewing the major molecular and cellular mechanisms underlying morphogenetic change and describing how these processes are integrated during normal development. Most of the major embryological systems, both vertebrate and invertebrate, are discussed, with extensive coverage of the molecular mechanisms of morphogenesis involving the extracellular matrix, the membrane and the cytoskeleton. The major focus of the book, however, is on those properties of mesenchymal and epithelial cells responsible for organogenesis, while the extensive reference cover of the historical and contemporary literature (more than 500 titles) provides a useful research tool in this very wide field. This book is aimed at both scholars in the field of embryology, and postgraduate and final-year students in development and anatomy.

Patterns in Plant Development offers an introduction to the development of the whole plant. It is essentially a factual book that describes the complex phenomena of development in vascular plants. The point of view is structural, and emphasis is placed on the experimental approach to development. The book deals with lower vascular plants (e.g. ferns) as well as seed plants, so that the treatment of the plant, beginning with the embryo and continuing through the phase of secondary growth (the vascular cambium) is presented. The book is written so that anyone who has completed a basic first-year university course in biology or botany will be able to use it without difficulty. Sufficient background information is provided so that the reader is not required to have an extensive technical background.

The technique of allometry investigates the effects of size on such variables as food intake, energy requirements, growth rates and age at first reproduction. This book, now available in paperback, brings together much of what is known about the consequences of size and provides a new and mathematically rigorous framework within which many quantitative predictions are made and tested using published and unpublished data. New explanations are proposed for many previously unexplained phenomena such as why in some species females are thousands of times heavier than males, whereas in no species are males more than about eight times heavier than females. The models presented afford a new synthesis of the effects of size and open up more pathways for further theoretical investigation and experimental testing. Care has been taken to give verbal presentations of all the mathematical conclusions to ensure that the text is widely intelligible.

Patterns in Plant Development offers an introduction to the development of the whole plant. It is essentially a factual book that describes the complex phenomena of development in vascular plants. The point of view is structural, and emphasis is placed on the experimental approach to development. The book deals with lower vascular plants (e.g. ferns) as well as seed plants, so that the treatment of the plant, beginning with the embryo and continuing through the phase of secondary growth (the vascular cambium) is presented. The book is written so that anyone who has completed a basic first-year university course in biology or botany will be able to use it without difficulty. Sufficient background information is provided so that the reader is not required to have an extensive technical background.

The editors present, in a single volume, a valuable reference source for students of mammalian embryology, genetics, and physiology, this book provides a thorough overview of the field of embryonic development - its current status along with possible directions in the future.

This description of a model system for cell differentiation and organogenesis is written by one of the foremost researchers in the area. The main emphasis is on the mammalian kidney, but the book also deals with the development of the transien excretory organs. It includes discussions of induction, proliferation, early cytodifferentiation and morphogenesis and organogenesis. This authoritative account will be valuable to developmental biologists and also to scientists working in paediatric nephrology. As it gives the background of normal development and of control systems, it will also be of use to nephrologists working on abnormalities in the urinary tract.

This book considers in detail the mechanisms of a major human problem. Chromosome imbalance affects all stages of life in ways ranging from spontaneous abortion and retardation to behavioural problems and malignancy. Charles J. Epstein concerns himself with how and why a particular chromosome imbalance produces a specific phenotype. His fundamental goal is to connect chromosome aberrations with functional abnormalities in terms of gene expression, developmental and cell biology, and metabolism. Through his examination of this relationship, we learn more about normal development and function. The book begins with an exploration of several human autosomal aneuploid phenotypes, with particular emphasis on the relationship between genotype and phenotype. In the next part, broad theoretical considerations of the mechanisms which generate these phenotypes are examined with reference to studies on man and other organisms such as bacteria and mice. Experimental approaches to study the effects of aneuploidy are presented next with special attention paid to the development of model systems for studying human aneuploidy.

How did life start? Is the evolution of life describable by any physics-like laws? Stuart Kauffman's latest book offers an explanation-beyond what the laws of physics can explain-of the progression from a complex chemical environment to molecular reproduction, metabolism and to early protocells, and further evolution to what we recognize as life. Among the estimated one hundred billion solar systems in the known universe, evolving life is surely abundant. That evolution is a process of "becoming" in each case. Since Newton, we have turned to physics to assess reality. But physics alone cannot tell us where we came from, how we arrived, and why our world has evolved past the point of unicellular organisms to an extremely complex biosphere. Building on concepts from his work as a complex systems researcher at the Santa Fe Institute, Kauffman focuses in particular on the idea of cells constructing themselves and introduces concepts such as "constraint closure." Living systems are defined by the concept of "organization" which has not been focused on in enough in previous works. Cells are autopoetic systems that build themselves: they literally construct their own constraints on the release of energy into a few degrees of freedom that constitutes the very thermodynamic work by which they build their own self creating constraints. Living cells are "machines" that construct and assemble their own working parts. The emergence of such systems-the origin of life problem-was probably a spontaneous phase transition to self-reproduction in complex enough prebiotic systems. The resulting protocells were capable of Darwin's heritable variation, hence open-ended evolution by natural selection. Evolution propagates this burgeoning organization. Evolving living creatures, by existing, create new niches into which yet further new creatures can emerge. If life is abundant in the universe, this self-constructing, propagating, exploding diversity takes us beyond physics to biospheres everywhere.

The book focuses on the lymphatic vascular system from a developmental biologist's point of view. It provides an overview on the many recent advances in understanding the development of lymphatic vessels, using advanced genetic models in conjunction with state of the art imaging. For each chapter a synopsis is provided, highlighting the main points in a concise manner. The book is intended for professors and researchers in vascular biology, angiogenesis research and developmental biology. It furthermore offers an excellent basis for entry level researchers and newcomers to this field, as well as for teachers, graduate students, advanced science and medical students.

Noted biologist and author John Tyler Bonner has experimented with cellular slime molds for more than sixty years, and he has done more than anyone else to raise these peculiar collections of amoebae from a minor biological curiosity to a major model organism--one that is widely studied for clues to the development and evolution of all living things. Now, five decades after he published his first pioneering book on cellular slime molds, Bonner steps back from the proliferating and increasingly specialized knowledge about the organism to provide a broad, nontechnical picture of its whole biology, including its evolution, sociobiology, ecology, behavior, and development. "The Social Amoebae" draws the big lessons from decades of research, and shows how slime molds fit into and illuminate biology as a whole.

Slime molds are very different from other organisms; they feed as individual amoebae before coming together to form a multicellular organism that has a remarkable ability to move and orient itself in its environment. Furthermore, these social amoebae display a sophisticated division of labor; within each organism, some cells form the stalk and others become the spores that will seed the next generation. In "The Social Amoebae," Bonner examines all these parts together, giving a balanced, concise, and clear overview of slime mold biology, from molecules to cells to multicells, as he advances some unconventional and unexpected insights.

All being done, we went to Mrs Shipmans, who is a great butter-woman; and I did see there the most of milke and cream, and the cleanest, that I ever saw in my life (29 May 1661). Among others, Sir Wm. Petty did tell me that in good earnest, he hath in his will left such parts of his estate to him that could invent such and such things -as among others, that could discover truly the way of milk coming into the breasts of a woman ... (22 March 1665). My wife tells me that she hears that my poor aunt James hath had her breast cut off here in tow- her breast having long been out of order (5 May 1665). From the Diary of Samuel Pepys, published as The Shorter Pepys (edited by R. Latham), Penguin Books (1987) The long-standing ultimate importance of research on the mammary gland is illustrated by the importance attached to cows' milk for human consumption, to human lactation and to breast cancer by Samuel Pepys and his contemporaries in the middle of the 17th century. Research has tended to develop in isolation in these three areas of continuing contemporary importance largely because in most countries, the underlying science of agricultural productivity is funded separately from the underlying science of human health and welfare.

The vertebrate retina has a form that is closely and clearly linked to its func tion. Though its fundamental cellular architecture is conserved across verte brates, the retinas of individual species show variations that are also of clear and direct functional utility. Its accessibility, readily identifiable neuronal types, and specialized neuronal connectivity and morphology have made it a model system for researchers interested in the general questions of the genet ic, molecular, and developmental control of cell type and shape. Thus, the questions asked of the retina span virtually every domain of neuroscientific inquiry-molecular, genetic, developmental, behavioral, and evolutionary. Nowhere have the interactions of these levels of analysis been more apparent and borne more fruit than in the last several years of study of the develop ment of the vertebrate retina. Fields of investigation have a natural evolution, rdoving through periods of initial excitement, of framing of questions and controversy, to periods of synthesis and restatement of questions. The study of the development of the vertebrate retina appeared to us to have reached such a point of synthesis. Descriptive questions of how neurons are generated and deployed, and ques tions of mechanism about the factors that control the retinal neuron's type and distribution and the conformation of its processes have been posed, and in good part answered. Moreover, the integration of cellular accounts of development with genetic, molecular, and whole-eye and behavioral accounts has begun."

This title is back in print with a revised preface. "Microcosmos" brings together the remarkable discoveries of microbiology of the past two decades and the pioneering research of Dr. Margulis to create a vivid new picture of the world that is crucial to our understanding of the future of the planet. Addressed to general readers, the book provides a beautifully written view of evolution as a process based on interdependency and their interconnectedness of all life on the planet.

The architecture of an embryo results from complex molecular interactions in time and space. The secrets of these processes are yielding quickly to genetic and cellular dissection in flies, mice, and other species, and finding application to human embryology. This remarkable volume presents the most current and authoritative survey of the induction of axes, control of cell migration, and the development of nervous system, limbs, wings, and other organs, seen through the perspective of sixty-one renowned investigators. Completed by a summary that charts the future of this dynamic field, this is a volume no laboratory interested in genes and development can afford to be without.

Beyond Biofatalism is a lively and penetrating response to the idea that evolutionary psychology reveals human beings to be incapable of building a more inclusive, cooperative, and egalitarian society. Considering the pressures of climate change, unsustainable population growth, increasing income inequality, and religious extremism, this attitude promises to stifle the creative action we require before we even try to meet these threats. Beyond Biofatalism provides the perspective we need to understand that better societies are not only possible but actively enabled by human nature. Gillian Barker appreciates the methods and findings of evolutionary psychologists, but she considers their work against a broader background to show human nature is surprisingly open to social change. Like other organisms, we possess an active plasticity that allows us to respond dramatically to certain kinds of environmental variation, and we engage in niche construction, modifying our environment to affect others and ourselves. Barker uses related research in social psychology, developmental biology, ecology, and economics to reinforce this view of evolved human nature, and philosophical exploration to reveal its broader implications. The result is an encouraging foundation on which to build better approaches to social, political, and other institutional changes that could enhance our well-being and chances for survival.

Over millions of years, terrestrial plants have competed for limited resources, defended themselves against herbivores, and resisted a myriad of environmental stresses. These struggles have helped generate more than a quarter million terrestrial plant species, each possessing a unique strategy for success. Yet, as "Resource Strategies of Wild Plants" demonstrates, the constraints on plant growth are universal enough that a few survival strategies hold true for all seed-producing plants. This book describes the five major strategies of growth for terrestrial plants, details how plants succeed when resources are scarce, delves into the history of research into plant strategies, and resets the foundational understanding of ecological processes.

Drawing from recent findings in plant-herbivore interactions, ecosystem ecology, and evolutionary ecology, Joseph Craine explains how plants attain available nutrients, withstand the immense stresses of drying soils, and flourish in the race for light. He shows that the competition for resources has shaped plant evolution in newly discovered ways, while the scarcity of such resources has affected how plants interact with herbivores, wind, fire, and frost. An understanding of the major resource strategies of wild plants remains central to learning about the ecology of plant communities, global changes in the biosphere, methods for species conservation, and the evolution of life on earth.

Signaling by diffusible morphogens, such as Hedgehog, Wingless, TGF-ss, and various growth factors, is essential during embryogenesis. The establishment of concentration gradients of these morphogens is vital for developmental patterning, ensuring that distinct differentiated cell types appear in the right place and at the right time in forming tissues.
Written and edited by experts in the field, this collection from Cold Spring Harbor Perspectives in Biology explores how morphogen gradients are generated and interpreted during development. The contributors examine the regulation of morphogen synthesis, trafficking, and diffusion, as well as the complex webs of signaling mechanisms and transcriptional responses in recipient cells --whose fates are dictated by these morphogens. Including discussion of the roles of morphogen gradients in various tissues in organisms from yeast to humans, the volume is a vital reference for developmental biologists and cell biologists wishing to know how cell fate is determined during embryogenesis

Bisphenol A (BPA) is a high production volume endocrine-disrupting chemical present in numerous consumer products. Extensive use of BPA has led to wide-spread contamination in the air, soil, and water, leading to ubiquitous human exposure. Research into BPA has grown exponentially over the past ten years, with numerous modes of action being identified that impact human health and disease development. While BPA has estrogenic effects, emerging literature has identified several non-receptor mediated modes of action, such as epigenetic reprogramming, that can affect the long-term health of the population. This book highlights the multiple modes of action BPA can use to reprogram cells genetically and metabolically. By compiling critical studies in BPA and outlining the connections and disparities in the literature to build a broader understanding of this complex endocrine-disrupting chemical and its impact on the environment and human health, this book is an ideal resource for postgraduates and researchers in a range of disciplines from toxicology to epigenetics and cancer epidemiology.

There is a major demand for people with scientific training in a wide range of professions based on and maintaining relations with science. However, there is a lack of good first-hand information about alternative career paths to research. From entrepreneurship, industry and the media to government, public relations, activism and teaching, this is a readable guide to science based skills, lifestyles and career paths. The ever-narrowing pyramid of opportunities within an academic career structure, or the prospect of a life in the laboratory losing its attraction, mean that many who trained in science and engineering now look for alternative careers. Thirty role models who began by studying many different disciplines give personal guidance for graduates, postgraduates and early-career scientists in the life sciences, physical sciences and engineering. This book is an entertaining resource for ideas about, and directions into, the many fields which they may not be aware of or may not have considered.

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.

All students and researchers of behaviour - from those observing freely-behaving animals in the field to those conducting more controlled laboratory studies - face the problem of deciding what exactly to measure. Without a scientific framework on which to base them, however, such decisions are often unsystematic and inconsistent. Providing a clear and defined starting point for any behavioural study, this is the first book to make available a set of principles for how to study the organisation of behaviour and, in turn, for how to use those insights to select what to measure. The authors provide enough theory to allow the reader to understand the derivation of the principles, and draw on numerous examples to demonstrate clearly how the principles can be applied. By providing a systematic framework for selecting what behaviour to measure, the book lays the foundations for a more scientific approach for the study of behaviour.