Overview
- Editors:
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Antonio Fontdevila
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Departamento de Genética y Microbiología, Universidad Autónoma de Barcelona, Bellaterra (Barcelona), Spain
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Table of contents (15 papers)
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Founder, Colonizing and Bottleneck Populations
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Theoretical Framework
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- H. Reşit Akçakaya, L. R. Ginzburg
Pages 32-42
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Experimental
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- A. Galiana, F. J. Ayala, A. Moya
Pages 58-73
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- A. Prevosti, L. Serra, M. Aguadé, G. Ribo, F. Mestres, J. Balañá et al.
Pages 114-129
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- J. R. David, A. Alonso-Moraga, P. Capy, A. Muñoz-Serrano, J. Vouidibio
Pages 132-144
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Evolutionary Mechanisms
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Front Matter
Pages 163-163
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Molecular
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- V. A. Ratner, L. A. Vasilyeva
Pages 165-189
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- J. M. Hancock, G. A. Dover
Pages 206-220
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Chromosomal
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- N. N. Vorontsov, E. A. Lyapunova
Pages 221-245
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Back Matter
Pages 291-293
About this book
An overview of speciation theory reveals an increasingly held view that many events leading to the origin of new species occur in transient, unstable populations. A transient, unstable population should be under stood as a fast episodic phase in a population subjected to genetic and environmental factors that tend to disrupt its cohesive, balanced genome architecure, thus enhancing its probability to produce a new species. Striking the core of Darwinian thought, some authors claim that these· processes may be non-adaptive. Among the environmental factors one may cite biotic (e.g. resource availability) and abiotic (e.g. temperature) stress conditions that break up the population stability producing random, unpredictable changes in population size, population trait distribution, breeding structure, inter- and/or intrapopulational hybridization, etc. Genetic factors consist of those events that induce rapid changes in genetic expression and/or that determine reproductive isolation, such as substitutions, insertions, deletions, duplications, transpositions, gross chromosomal rearrangements, recombination and, in general, any mechanism that changes the regulatory pattern of the organism or the balance of its meiotic system. Both kinds of factors are often intertwined in a complex net and may influence each other.
Editors and Affiliations
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Departamento de Genética y Microbiología, Universidad Autónoma de Barcelona, Bellaterra (Barcelona), Spain
Antonio Fontdevila