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Shrews, Chromosomes and Speciation
About this book
The chromosome complement (karyotype) often differs between related mammalian species (including humans vs chimpanzees), such that evolutionary biologists muse whether chromosomal difference is a cause or a consequence of speciation. The common shrew is an excellent model to investigate this problem because of its many geographical races (potential species) differing chromosomally, and its several sibling species (recently speciated forms) that are also chromosomally different. This system is an exceptional opportunity to investigate the role of chromosomes in speciation and this volume reflects detailed research following these approaches. Highlights include the demonstration that chromosomal re-arrangements can be associated with complete loss of gene flow and thus speciation and that selection within species hybrid zones may lead to de-speciation rather than speciation. This book represents an extraordinarily detailed consideration of the role of chromosomes in speciation in one astonishing species, providing insights to those interested in mammalian diversity, chromosomal evolution and speciation.
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Information
Table of contents
- Cover
- Half-title
- Series information
- Title page
- Copyright information
- Contents
- List of Contributors
- Preface
- 1 Milestones in Common Shrew Chromosomal Research
- 2 Introducing the Common Shrew
- 3 Morphology and Genetics of the Common Shrew: General Features
- 4 Phylogeography
- 5 Chromosomal Differentiation in the Common Shrew and Related Species
- 6 Phylogenetic Relationships of Chromosomal Races
- 7 Meiosis and Fertility Associated with Chromosomal Heterozygosity
- 8 Chromosomal Hybrid Zones
- 9 Gene Flow Between Chromosomal Races and Species
- 10 Geometric Morphometric Tests for Phenotypic Divergence Between Chromosomal Races
- 11 Is It Really the Chromosomes?
- 12 Further Divergence: the Role of Ecology and Behaviour
- 13 Climate, Diversification and Refugia in the Common Shrew: Evidence from the Fossil Record
- 14 Shrews, Chromosomes and Speciation
- Index