Umfang:
Online-Ressource (XXXIX, 934p. 268 illus., 99 illus. in color, digital)
ISBN:
9789400729414
,
1280787295
,
9781280787294
Serie:
Cellular Origin, Life in Extreme Habitats and Astrobiology 22
Inhalt:
Joseph Seckbach
Inhalt:
Genesis - In The Beginning deals with the origin and diversity of Life and early biological evolution and discusses the question of where (hot or cold sources) and when the beginning of Life took place. Among the sections are chapters dealing with prebiotic chemical processes and considering self-replication of polymers in mineral habitats. One chapter is dedicated to the photobiological regime on early Earth and the emergence of Life. This volume covers the role of symmetry, information and order (homochrial biomolecules) in the beginning of Life. The models of protocells and the genetic code with gene transfer are important topics in this volume. Three chapters discuss the Panspermia hypothesis (to answer 'Are we from outer Space'?). Other chapters cover the Astrobiological aspects of Life in the Universe in extraterrestrial Planets of the Solar System and deal with cometary hydrosphere (and its connection to Earth). We conclude with the history and frontiers of Astrobiogy.
Anmerkung:
Description based upon print version of record
,
Genesis - In The Beginning; Table of Contents; Pathways to ""Genesis-in the Beginning: Precursors of life, Chemical Models, and Early Biological Evolution""; References; Foreword; References; Introduction; Origins of Life-Keeping Options Open; References; List of Authors and Their Addresses; Part I:Chemical Evolution; The Prebiotic Chemistry of Alternative Nucleic Acids; 1. Introduction; 1.1. A Scheme for Genetic Molecule Formation; 1.1.1. Searching Sequence Space; 1.2. The RNA World; 1.3. Alternatives to RNA; 2. To Build a Primordial Nucleic Acid; 2.1. Base Substitutions
,
2.2. Backbone Substitutions2.2.1. Alternative Sugar Backbones; 2.2.2. Acyclic Nucleotides; 2.2.3. Peptide Nucleic Acids; 2.3. Linker Substitutions; 2.4. Recognition Surfaces; 2.5. Nucleoside Formation; 2.6. The Constraints of Prebiotic Chemistry; 3. Future Directions; 4. Conclusions; 5. References; Cooptive Evolution of Prebiotic Chemical Networks; 1. Introduction; 2. Self-Organization Without Natural Selection; 3. Compartmentalized Chemical Networks Undergoing Natural and Artificial Selection; 4. Autocatalytic Sets and Viable Strongly Connected Cores
,
5. Cooptive Evolution in Catalytic Networks6. Conclusions; 7. Acknowledgements; 8. References; Origin and Evolution of Self-Replicating Polymers on Mineral Habitats; 1. Introduction; 2. The Mineral Environment; 3. Clay-Nucleic Acid Complexes; 4. Evolution of Replicators on "Mineral Surfaces"; 5. References; Mathematical Models of Prebiotic Replication of Informational Molecules; 1. Introduction; 2. Introducing Kinetics of Self-Replication; 3. Quasispecies Theory; 3.1. The Replicator Equation; 3.2. The Quasispecies; 3.3. The Error Threshold; 4. Overcoming Eigen's Paradox; 4.1. The Hypercycle
,
4.2. Relaxation of the Error Threshold5. Prevolutionary Dynamics and the Origin of Replication; 5.1. Selection Before Replication; 5.2. Selection for Replication; 6. Concluding Remarks; 7. References; Life Without Carbon; 1. Introduction; 2. Crust Formation; 3. Trends in the Periodic Table of Elements and in Biological Evolution; 4. Building an Integrated System; 5. Constancy of Environmental Conditions; 6. Discussion; 7. Conclusions; 8. Acknowledgments; 9. References; [GADV]-Protein World Hypothesis on the Origin of Life; 1. Introduction
,
1.1. Background of the Present Studies on the Origin of Life1.2. Properties of [GADV]-Amino Acids; 2. The Origin of the Genetic Code; 2.1. Genetic Code in the Fundamental Life System; 2.2. GC-NSF(a) Hypothesis on Formation of Entirely New Genes Under the Present Life System; 2.3. GNC-SNS Primitive Genetic Code Hypothesis; 2.4. Recent Studies on the Origin of the Genetic Code; 3. [GADV]-Protein World Hypothesis; 3.1. New Concepts Leading to the GADV Hypothesis; 3.2. Possible Steps to the Emergence of Life; 4. Summary and Conclusions; 5. References
,
Reality of the Emergence of Life-like Systems from Simple Prebiotic Polymers on Primitive Earth
Weitere Ausg.:
ISBN 9789400729407
Weitere Ausg.:
Buchausg. u.d.T. Genesis - in the beginning Dordrecht, Heidelberg : Springer, 2012 ISBN 9789400729407
Sprache:
Englisch
Schlagwort(e):
Biogenese
;
Leben
;
Biochemie
;
Evolution
;
Evolutionsbiologie
;
Aufsatzsammlung
DOI:
10.1007/978-94-007-2941-4
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