Contents -- Acknowledgments -- Prologue -- PART ONE: SEARCH FOR A VICTORIAN -- 1 Evolution of Languages and Species -- 2 Variation, Heredity, Phenotypic and Reproductive Selection -- 3 Darwin's Difficulties -- 4 Hybrid Sterility -- 5 Physiological Selection -- 6 Failure of Meiotic Pairing -- 7 Conjugation of the Chromosomes -- 8 Why Sex? -- PART TWO: THE SPECIES-DEPENDENT COMPONENT OF BASE COMPOSITION -- 9 Molecular Biology -- 10 Primary and Secondary Levels of Information -- 11 The Dominance of the Genome Phenotype -- 12 Initiation of Speciation -- 13 Relationship to Physiological Selection -- PART THREE: THE DIVERGENCE AND CONVERGENCE OF SPECIES -- 14 Selfish Genes and Selfish Groups -- 15 Slow Fine-Tuning of Sequences -- 16 Fine-Tuning of RNAs -- 17 RNAs Driving on the Wrong Side -- 18 Protein Concentration and Genetic Dominance -- 19 Sex Chromosomes -- PART FOUR: THE DARWINIAN STRUGGLE FOR TRUTH -- 20 The Philosopher -- 21 Huxley and the Philosopher's Wife -- 22 "We Commend This State of Mind" -- Epilogue -- References -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- V -- W -- X -- Y -- Z.