Foreword |
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xi | |
Preface |
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xv | |
Color Plates |
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xvii | |
Introduction |
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1 | (4) |
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1 Are Species Constructs of the Human Mind? |
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5 | (4) |
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2 Why is there a Species Problem? |
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9 | (36) |
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2.1 Objective of the Book |
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9 | (1) |
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2.2 Can Species be Defined and Delimited from one Another? |
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10 | (2) |
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2.3 What Makes Biological Species so Special? |
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12 | (3) |
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2.4 Species: To Exist, or not to Exist, that is the Question |
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15 | (4) |
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2.5 The Reality of Species: Ernst Mayr vs. Charles Darwin |
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19 | (1) |
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2.6 The Constant Change in Evolution and the Quest of Taxonomy for Fixed Classes: can these be Compatible? |
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20 | (3) |
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2.7 Can a Scientist Work with a Species Without Knowing what a Species is? |
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23 | (1) |
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2.8 The Species as an Intuitive Concept and a Cognitive Preset in the Human Mind |
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24 | (3) |
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2.9 Taxonomy's Status as a "Soft" or "Hard Science" |
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27 | (3) |
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2.10 The Impact of the Species Concept on Nature Conservation and the Allocation of Tax Money |
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30 | (1) |
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2.11 Sociological Consequences of a Misunderstood Concept of Race |
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31 | (2) |
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2.12 Species Pluralism: How Many Species Concepts Exist? |
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33 | (6) |
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2.13 It is One Thing to Identify a Species, but Another to Define what a Species is |
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39 | (2) |
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2.14 The Dualism of the Species Concept: the Epistemic vs. the Operative Goal |
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41 | (4) |
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3 Is the Biological Species a Class or is it an Individual? |
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45 | (22) |
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3.1 Preliminary Note: Can a Species have Essential Traits? |
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45 | (2) |
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3.2 Class Formation and Relational Group Formation |
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47 | (2) |
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3.3 Is the Biological Species a Universal/Class or an Individual? |
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49 | (2) |
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3.4 The Difference Between a Group of Objects as a Class and a Group of Objects as an Individual is a Fundamental One |
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51 | (3) |
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3.5 Artificial Classes and Natural Kinds |
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54 | (2) |
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3.6 The Biological Species Cannot be a Natural Kind |
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56 | (2) |
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3.7 The Biological Species as a Homeostatic Property Cluster |
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58 | (2) |
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3.8 Polythetic Class Formation or Grouping According to Family Resemblance |
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60 | (1) |
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3.9 The Linnaean System is Based on Fundamental Assumptions that are Irreconcilable with a Contemporary Worldview of Science |
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61 | (2) |
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3.10 Comparison of the System of Organisms with the Periodic Table of Chemical Elements |
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63 | (1) |
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3.11 The Relational Properties of the Members of a Species are the Essence of the Species |
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64 | (3) |
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4 What are Traits in Taxonomy? |
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67 | (26) |
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67 | (1) |
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4.2 What Basic Rule Defines Traits as Being Taxonomically Relevant? |
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68 | (3) |
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4.3 What is the Relevance of Differences in Genes Between Two Species? |
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71 | (2) |
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4.4 In Sticklebacks (Gasterosteus aculeatus), a Single Gene Controls Many Phenotypes |
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73 | (1) |
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4.5 What is the Relevance of Differences in Traits between Two Species? |
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74 | (2) |
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4.6 Traits that are Used by the Species to Distinguish Themselves |
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76 | (4) |
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4.7 A Species cannot be Defined by Traits |
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80 | (2) |
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4.8 What are Homologous Traits? |
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82 | (2) |
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4.9 The Vertebrate Eye and the Squid Eye: They Cannot be Homologous Nor can they be Non-Homologous |
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84 | (2) |
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4.10 The DNA Barcoding Approach - is Taxonomy Nothing more than Phylogenetic Distance? |
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86 | (7) |
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5 Diversity within the Species: Polymorphisms and the Polytypic Species |
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93 | (34) |
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93 | (1) |
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5.2 Differences in Traits do not Necessarily Mean Species Differences |
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94 | (2) |
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5.3 Superfluous Taxonomic Terms: Variation, Aberration, Form, Phase, Phenon |
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96 | (1) |
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5.4 What are Races or Subspecies? |
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97 | (2) |
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5.5 Are Carrion Crow and Hooded Crow (Corvus corone and C. cornix) in Eurasia and the Guppy Populations on Trinidad Species or Races? |
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99 | (1) |
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100 | (3) |
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5.7 What are Mutants {in a Taxonomic Sense}? |
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103 | (1) |
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104 | (1) |
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5.9 How Long is the Lifetime of Allelic Polymorphisms? |
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105 | (1) |
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5.10 Stable Polymorphisms - The Selective Advantage is Diversity |
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106 | (2) |
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5.11 Are Differences between Species Due only to Differences in Allelic Frequency Distribution, Such that there are no Truly Species-Specific Traits? |
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108 | (2) |
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5.12 Partially Migratory Birds - an Example of Genetic Polymorphisms |
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110 | (4) |
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5.13 Intraspecies Morphs in the Burnet Moth Zygaena ephialtes |
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114 | (2) |
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5.14 The Color Pattern Polymorphism of the Shells of the Brown-Lipped Snail Cepaea nemoralis |
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116 | (2) |
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5.15 The Beak Polymorphism in the Black-Bellied Seedcracker Finch Pyrenestes ostrinus |
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118 | (1) |
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5.16 The Beak Polymorphism in the Darwin Finch Geospiza fortis |
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119 | (2) |
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5.17 Intraspecies Morphs in the Garter Snake Thamnophis ordinoides |
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121 | (1) |
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5.18 Urbanization in Certain Bird Species is based on Genetic Polymorphism |
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121 | (2) |
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5.19 The Mimicry Morphs of the Female Swallowtails of the Genus Papilio |
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123 | (2) |
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5.20 The Morphs of the Brood-Parasitic Cuckoo Female Cuculus canorus |
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125 | (2) |
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6 Biological Species as a Gene-Flow Community |
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127 | (60) |
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6.1 The Definition of the Gene-Flow Community |
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127 | (3) |
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6.2 The Connection of Organisms in a Gene-Flow Community Includes the Genealogical Connection |
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130 | (1) |
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6.3 The Species is a Gene-Flow Community, Not a Reproductive Community |
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131 | (2) |
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6.4 A Species Concept Requires Both Connection and Delimitation |
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133 | (1) |
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6.5 The Concept of the Gene-Flow Community in Eukaryotes and in Bacteria |
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134 | (1) |
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6.6 Uniparental Propagation in Eukaryotes |
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135 | (3) |
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6.7 Why do the Individuals of a Species Resemble Each Other? |
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138 | (2) |
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6.8 Isolation by Distance |
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140 | (1) |
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6.9 A Decrease in Lateral Sexual Gene Flow, together with Local Adaptation, Creates Races |
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141 | (2) |
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6.10 The Adaptation of Breeding Times in Birds to the Annual Maximum Food Supply |
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143 | (1) |
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6.11 Are Migratory and Sedentary Birds Able to Crossbreed? |
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144 | (2) |
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6.12 Are Geographically Distant Populations of Stonechats (Saxicola torquata) or Blackcaps (Sylvia atricapilla) Genetically Compatible? |
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146 | (2) |
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6.13 Are Univoltine and Bivoltine Butterflies Able to Crossbreed? |
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148 | (1) |
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6.14 Speciation Genes, Pre- and Postzygotic Barriers |
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149 | (2) |
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6.15 Hybrid Incompatibility |
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151 | (2) |
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6.16 Haldane's Rule and the Genes for Postzygotic Incompatibility |
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153 | (2) |
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6.17 Sympatric and Allopatric Speciation |
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155 | (4) |
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6.18 Sympatric Speciation in the Fruit fly Rhagoletis, in Cichlids and in the Fire Salamander |
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159 | (2) |
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6.19 Reproductive Incompatibility is Different than Phylogenetic Distance |
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161 | (1) |
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6.20 Phylogenetic Distance and Reproductive Incompatibility in Two Species Pairs, Polar Bear (Ursus maritimus) and Brown Bear (U. arctos), in Comparison to Grey Wolf (Canis lupus) and Coyote (C. latrans) |
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162 | (1) |
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6.21 The Herring Gull (Larus argentatus) and the Greenish Warbler (Phylloscopus trochiloides), a False and a True Model for the Ring Species |
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163 | (2) |
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6.22 Allopatrically Separated Populations are Always Different Species |
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165 | (2) |
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6.23 Species Hybrids as Exceptions without Evolutionary Consequences |
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167 | (2) |
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6.24 The Example of Some Duck Species: Extinction through Hybridization |
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169 | (2) |
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6.25 The Origin of Reproductive Isolation Through Reinforcement |
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171 | (2) |
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6.26 Hybridogenic Speciation |
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173 | (3) |
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6.27 Is the Italian Sparrow (Passer italiae) a Hybrid Species? |
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176 | (2) |
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6.28 "Gene theft" between two Species of Galapagos Ground Finches |
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178 | (2) |
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6.29 "Gene theft" between two Species of Green Frogs (Pelophylax ridibunda and P. lessonae) |
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180 | (1) |
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6.30 How many Genes Must Mutate for the Origin of New Species? |
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181 | (2) |
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6.31 The Problem of Smooth Boundaries between two Gene-Flow Communities |
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183 | (4) |
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7 The Cohesion of Organisms Through Genealogical Lineage (Cladistics) |
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187 | (30) |
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7.1 Preliminary Remarks on Descent Connection |
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187 | (2) |
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7.2 The Problem of Displaying the Phylogenetic Tree in the Case of Biparental Reproduction |
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189 | (2) |
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7.3 What are Species Boundaries in Cladistics? |
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191 | (3) |
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7.4 How is a Cladistic Bifurcation Defined? Apomorphies and Autapomorphies |
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194 | (2) |
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7.5 Descent is not the Same Thing as Kinship: The Concepts of Monophyly and Paraphyly |
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196 | (3) |
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7.6 Why are Paraphyla used Despite their Inconsistency? |
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199 | (3) |
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7.7 Monophyly and Paraphyly on Different Hierarchical Levels |
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202 | (2) |
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7.8 Gene Trees are not Species Trees |
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204 | (2) |
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7.9 The Concepts of Monophyly and Paraphyly cannot be Applied to Species |
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206 | (2) |
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7.10 Paraphyly and Anagenesis are Mixed Classifications |
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208 | (2) |
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7.11 The Cladistic Bifurcation of a Stem Species Always Means the End of the Stem Species |
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210 | (2) |
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212 | (5) |
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217 | (2) |
References |
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219 | (10) |
Scientific Terms |
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229 | (10) |
Index |
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239 | |