Meiosis and Gametogenesis


Book Description

In spite of the fact that the process of meiosis is fundamental to inheritance, surprisingly little is understood about how it actually occurs. There has recently been a flurry of research activity in this area and this volume summarizes the advances coming from this work. All authors are recognized and respected research scientists at the forefront of research in meiosis. Of particular interest is the emphasis in this volume on meiosis in the context of gametogenesis in higher eukaryotic organisms, backed up by chapters on meiotic mechanisms in other model organisms. The focus is on modern molecular and cytological techniques and how these have elucidated fundamental mechanisms of meiosis. Authors provide easy access to the literature for those who want to pursue topics in greater depth, but reviews are comprehensive so that this book may become a standard reference.Key Features* Comprehensive reviews that, taken together, provide up-to-date coverage of a rapidly moving field* Features new and unpublished information* Integrates research in diverse organisms to present an overview of common threads in mechanisms of meiosis* Includes thoughtful consideration of areas for future investigation




Biology of Bryozoans


Book Description

Biology of Bryozoans covers some of the unusual and even unique systems and aspects of bryozoans. The book discusses the gametogenesis of bryozoans; the brooding patterns of bryozoans; and the structure and classification of gymnolaemate larvae. The text also describes the metamorphosis, ancestrulae, and coloniality in bryozoan life cycles; the ultrastructure, mineralogy, and development of bryozoan skeletons; and polymorphism in marine bryozoans. Bryozoan feeding and culture; experimental techniques and culture methods; and the problem of the funiculi and the communications are also considered. The book further tackles the aging process in bryozoans; the bryozoan nervous system; and taxes and tropisms of bryozoans. The text also looks into the life strategies of bryozoans; the population genetics of bryozoans; and the adaptive model for the evolution of the ectoproct life cycle. Zoologists, marine biologists, and students taking related courses will find the book invaluable.




Review of Medical Embryology


Book Description




Biodiversity in Enclosed Seas and Artificial Marine Habitats


Book Description

The main themes of the Symposium were biodiversity in enclosed and semi-enclosed seas and artificial habitats, and the restoration of degraded systems. These themes are highly relevant today. The papers dealing with the first theme represent current research and concerns about marine biodiversity in enclosed seas. The papers in the second theme represent a synthesis of up-to-date knowledge on artificial habitats.




Life


Book Description

Co-published by Sinauer Associates, Inc., and W. H. Freeman and Company. Visit the Life, Eighth Edition preview site. LIFE HAS EVOLVED. . . from its original publication to this dramatically revitalized Eighth Edition. LIFE has always shown students how biology works, offering an engaging and coherent presentation of the fundamentals of biology by describing the landmark experiments that revealed them. This edition builds on those strengths and introduces several innovations. As with previous editions, the Eighth Edition will also be available in three paperback volumes: • Volume I: The Cell and Heredity, Chapters 1-20 • Volume II: Evolution, Diversity and Ecology, Chapters 1, 21-33, 52-57 • Volume III: Plants and Animals, Chapters 1, 34-51




Reproduction in Aquatic Animals


Book Description

This book provides an up-to-date overview of the various reproductive systems of a variety of aquatic animals, from invertebrates to fishes. While all terrestrial animals use internal fertilization, aquatic animals have diverse reproductive systems. Some are internal fertilizers with or without mating, but many perform external fertilization. Because of this diversity, the reproductive systems of aquatic animals represent excellent models for the study of adaptive evolution and the species specificity of fertilization. In addition, many aquatic animals, including fish, crustaceans, and mollusks, are important as fishery and aquaculture resources. In this book, up-and-coming researchers examine reproductive systems in representative aquatic animals, covering both the basic knowledge and late-breaking results. Reproduction in Aquatic Animals: From Basic Biology to Aquaculture Technology will be of interest to graduate and postgraduate students in biology and agricultural sciences, as well as to researchers and technicians in the fields of reproductive biology and fishery science and to non-academics.




Reproduction of Amphibians


Book Description

This book deals with reproduction of Amphibians belonging to three extant orders: Caecilians, Salamanders, Frogs and Toads. Separate chapters have been written for males and females; the chapters describe gonad structure and development, gametogenesis, urogenital connections, and reproductive tracts. The authors have provided a synthesis of the lit




Chromosome Abnormalities and Genetic Counseling


Book Description

Advances in cytogenetics continue to crop up in wonderful ways, and we know exponentially more about chromosomes now than mere decades ago. Likewise, the necessary skills in offering genetic counseling continue to evolve. This new edition of Chromosome Abnormalities in Genetic Counseling offers a practical, up-to-date guide for the genetic counselor to marshal cytogenetic data and analysis clearly and effectively to families.




Invertebrate Embryology and Reproduction


Book Description

Invertebrate Embryology and Reproduction deals with the practical and theoretical objectives of the descriptive embryology of invertebrates, along with discussions on reproduction in these groups of animals. It explains several morphological and anatomical expressions in the field and covers the embryology of invertebrate animals, starting from the Protozoa, to the Echinodermata, the Protochordate and Tunicates. These groups include economically important aquatic invertebrates, such as crustaceans, as well as medically important invertebrates and economic arthropods. Each chapter is preceded by the taxonomy of the discussed phylum and/or the species to enable the reader to locate the systematic position. - Covers phylum definition, general characteristics, classification, reproduction, agametic reproduction, gametic reproduction, spawning, fertilization, development and embryogenesis - Includes recent findings in the area, along with detailed figures and photos that illustrate important concepts - Brings together difficult-to-obtain research data from the field, not only in Egyptian libraries, but globally, and previously only found through specialized references not widely available - Clarifies descriptions with striking photos and electron microscopical studies of different species




Introduction to Molecular Embryology


Book Description

Nearly 10 years have elapsed since I finished writing the first edition of Intro duction to Molecular Embryology. During this period, molecular embryology has made great strides forward, but without undergoing a major revolution; there fore, the general philosophy and outline of the book have remained almost un changed. However, all the chapters had to be almost completely rewritten in or der to introduce new facts and to eliminate findings which have lost interest or have been disproved. There was a major gap in the first edition of this book: very little was said about mammalian eggs despite their obvious interest for mankind. Research on mammalian eggs and embryos is so active today that this important topic deserves a full chapter in a book concerned with molecular embryology. Therefore, I am very thankful to my colleague Dr. Henri Alexandre, who has written a chapter on mammalian embryology (Chap. 9) and has prepared all the illustrations for this book.