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Author: Aubrey Salazar Publisher: Scientific e-Resources ISBN: 1839474424 Category : Languages : en Pages : 302
Book Description
The origin and evolution of chordates is one of the most mysterious and interesting phenomena in evolutionary development science. Chordates are creatures characterized by possession of a notochord and pharyngeal gill openings. They comprise of three taxa: cephalochordates, urochordates (or tunicates), and vertebrates. Chordates belong to a supraphyletic gathering of deuterostomes, together with echinoderms and hemichordates, and are thought to have been derived from the regular ancestors of deuterostomes. Vertebrates evoloved by developing a body design with the greatest complexity among metazoans. Amid the 1980s, a new wave of molecular developmental science revealed that genes encoding interpretation factors and flag pathway molecules assume critical roles in the differentiation of embryonic cells, arrangement of organs and tissues, and morphogenesis for development of metazoan body designs. Presently, another wave of evolutionary developmental science studies revealed that metazoans from cnidarians to vertebrates, despite their diverse morphologies, utilize a very comparable set of interpretation factors and flag pathway molecules for body development: these genes are sometimes collectively called a genetic toolbox.
Author: Aubrey Salazar Publisher: Scientific e-Resources ISBN: 1839474424 Category : Languages : en Pages : 302
Book Description
The origin and evolution of chordates is one of the most mysterious and interesting phenomena in evolutionary development science. Chordates are creatures characterized by possession of a notochord and pharyngeal gill openings. They comprise of three taxa: cephalochordates, urochordates (or tunicates), and vertebrates. Chordates belong to a supraphyletic gathering of deuterostomes, together with echinoderms and hemichordates, and are thought to have been derived from the regular ancestors of deuterostomes. Vertebrates evoloved by developing a body design with the greatest complexity among metazoans. Amid the 1980s, a new wave of molecular developmental science revealed that genes encoding interpretation factors and flag pathway molecules assume critical roles in the differentiation of embryonic cells, arrangement of organs and tissues, and morphogenesis for development of metazoan body designs. Presently, another wave of evolutionary developmental science studies revealed that metazoans from cnidarians to vertebrates, despite their diverse morphologies, utilize a very comparable set of interpretation factors and flag pathway molecules for body development: these genes are sometimes collectively called a genetic toolbox.
Author: P.S.Verma Publisher: S. Chand Publishing ISBN: 8121916399 Category : Science Languages : en Pages : 1095
Book Description
FOR B.Sc & B.Sc.(Hons) CLASSES OF ALL INDIAN UNIVERSITIES AND ALSO AS PER UGC MODEL CURRICULUMN Contents: CONTENTS:Protochordates:Hemicholrdata 1.Urochordata Cephalochordata Vertebrates : Cyclostomata 3. Agnatha, Pisces Amphibia 4. Reptilia 5. Aves Mammalia 7 Comparative Anatomy:lntegumentary System 8 Skeletal System Coelom and Digestive System 10 Respiratory System 11. Circulatory System Nervous System 13. Receptor Organs 14 Endocrine System 15 Urinogenital System 16 Embryology Some Comparative Charts of Protochordates 17 Some Comparative Charts of Vertebrate Animal Types 18 Index.
Author: Noriyuki Satoh Publisher: Academic Press ISBN: 0128030062 Category : Science Languages : en Pages : 222
Book Description
Chordate Origins and Evolution: The Molecular Evolutionary Road to Vertebrates focuses on echinoderms (starfish, sea urchins, and others), hemichordates (acorn worms, etc.), cephalochordates (lancelets), urochordates or tunicates (ascidians, larvaceans and others), and vertebrates. In general, evolution of these groups is discussed independently, on a larger scale: ambulacrarians (echi+hemi) and chordates (cephlo+uro+vert). Until now, discussion of these topics has been somewhat fragmented, and this work provides a unified presentation of the essential information. In the more than 150 years since Charles Darwin proposed the concept of the origin of species by means of natural selection, which has profoundly affected all fields of biology and medicine, the evolution of animals (metazoans) has been studied, discussed, and debated extensively. Following many decades of classical comparative morphology and embryology, the 1980s marked a turning point in studies of animal evolution, when molecular biological approaches, including molecular phylogeny (MP), molecular evolutionary developmental biology (evo-devo), and comparative genomics (CG), began to be employed. There are at least five key events in metazoan evolution, which include the origins of 1) diploblastic animals, such as cnidarians; 2) triploblastic animals or bilaterians; 3) protostomes and deuterostomes; 4) chordates, among deuterostomes; and 5) vertebrates, among chordates. The last two have received special attention in relation to evolution of human beings. During the past two decades, great advances have been made in this field, especially in regard to molecular and developmental mechanisms involved in the evolution of chordates. For example, the interpretation of phylogenetic relationships among deuterostomes has drastically changed. In addition, we have now obtained a large quantity of MP, evo-devo, and CG information on the origin and evolution of chordates. - Covers the most significant advances in this field to give readers an understanding of the interesting biological issues involved - Provides a unified presentation of essential information regarding each phylum and an integrative understanding of molecular mechanisms involved in the origin and evolution of chordates - Discusses the evolutionary scenario of chordates based on two major characteristic features of animals—namely modes of feeding (energy sources) and reproduction—as the two main forces driving animal evolution and benefiting dialogue for future studies of animal evolution
Author: Dr. Shikha Jaggi Publisher: Thakur Publication Private Limited ISBN: 9357556192 Category : Education Languages : en Pages : 185
Book Description
Buy Latest (Zoology) Animal Diversity of Chordates (MAJOR/MINOR) e-Book in English Language for B.Sc 2nd Semester KUK/CRS University NEP-2020 By Thakur publication.
Author: PANDEY, B.N. Publisher: PHI Learning Pvt. Ltd. ISBN: 9387472140 Category : Science Languages : en Pages : 676
Book Description
Based on the integrated and holistic approach, the book systematically and comprehensively covers a general account of taxonomical, morphological, anatomical and physiological features of chordates. The text does not restrict discussion only to a representative genus in each class, but also provides knowledge of other important genera, and gives their general account and comparative features to help students understand animal diversity in the phylum. Besides the type study, the book also deals with the developmental and ecological aspects of the genera discussed. The book is intended to fulfill the curriculum need of B.Sc. Zoology, Life Sciences, Biological Sciences and Animal Sciences as well as M.Sc. Zoology students for their core course on chordata (chordates). Additionally, the students appearing for various competitive examinations and entrance test for postgraduate courses in the related fields will find this book useful. KEY FEATURES Incorporates the topics of modern research such as Fish as Biocontrol Agents, Mimicry in Birds, Nesting and Brooding Behaviour of Birds, and so on. Compares important genera of the class—morphological, anatomical and adaptive features. Well-illustrated coloured diagrams with meticulous details and labelling for clear understanding of anatomy. Important information nested in boxes, points to remember and classification in the form of flow charts add strength to each chapter. Provides a variety of pedagogically arranged interactive exercises for self assessment—from fill in the blanks, true/false statements, give reasons to MCQs. Also, the readers can check their answers online at www.phindia/pandey-mathur
Author: Dr. Lalit Gupta Publisher: Thakur Publication Private Limited ISBN: 9357552626 Category : Education Languages : en Pages : 383
Book Description
Explore the English Edition e-book for B.Sc. 5th Semester, focusing on 'Diversity of Chordates and Comparative Anatomy' (Zoology Paper-II). This comprehensive e-book, published by Thakur Publication Pvt. Ltd., is aligned with the NEP and follows the Common Minimum Syllabus for all UP State Universities. Dive into the fascinating world of chordates and comparative anatomy, enhancing your understanding of zoology. Access this valuable resource and excel in your B.Sc. studies with Thakur Publication's e-book.
Author: Pranveer Singh Publisher: Nova Science Publishers ISBN: 9781634639330 Category : Chordata Languages : en Pages : 323
Book Description
This book is structured into eight chapters, starting from introductory chapters throwing light on basic evolutionary principles to different aspects of chordate evolution. This book is written to accommodate the needs of diverse readers that range from undergraduate and postgraduate students to research scholars. This book spans diverse but related disciplines that range from morphology, anatomy, taxonomy, physiology, evolution and diversity and has updates from the latest in chordate research.
Author: PS Verma Publisher: S. Chand Publishing ISBN: 9788121908290 Category : Science Languages : en Pages : 518
Book Description
The book provides discussion on all aspects of Invertebrates as covered in Practical Zoology. Beginning with general techniques of preparation of cultures of Protozoa, microscopic slides and laboratory regents, it also covers in tabular and detailed form, recent classification of various invertebrate phyla with examples of each order or suborder. Wide coverage of each phylum, and diagrams of major and minor dissections make the book equally useful for both undergraduate and postgraduate students.
Author: Aubrey Salazar
Author: Aubrey Salazar
Author: P.S.Verma
Author: Noriyuki Satoh
Author: Dr. Shikha Jaggi
Author: Prof. Prem Ranjan
Author: PANDEY, B.N.
Author: Dr. Lalit Gupta
Author: Pranveer Singh
Author: PS Verma
Author: Edwin Chapin Starks