Part I: LGT-Driven Metabolic Innovations and Adaptations.- Lateral Gene Transfer and the Synthesis of Thymidine.- Lateral Gene Transfer and the Evolution of Photosynthesis in Eukaryotes.- On the Eco-evolutionary Relationships of Fresh and Salt Water Bacteria and the Role of Gene Transfer in their Adaptation.- Mobilized Integrons: Team Players In The Spread of Antibiotic Resistance Genes.- Plasmids of the bovine Rumen.- Part II: The Integration of New Genes into Existing Networks.- Lateral Gene Transfer and Cellular Networks.- The Complexity Hypothesis and Other Connectivity Barriers to Lateral Gene Transfer.- How Codon Usage Shapes Gene Transfer and Vice Versa.- Part III: Inter-domain Gender Transfer.- Lateral Gene Transfer in Animals.- Gene Transfer and the Chimeric Nature of Eukaryotic Genomes.- Gene transfer from Eukaryotes to Legionella.- Application of a new Mapping Algorithm to Reevaluate Evidence of Interdomain Horizontal Gene Transfer in the Genome of Thermotoga Maritime.- Part IV: LGT, Speciation and the Tree/Web of Life.- Gradual Speciation and its Implications for the Tree of Life.- Biased Gene Transfer Contributes to Maintaining the Tree of Life.- Speciation in the Shadow of Recombination and Lateral Gene Transfer.- Index.