Key Transitions in Animal Evolution

Addressing the evolution of key innovations in metazoans, this challenging book summarizes the more recent results in phylogenetics and developmental biology. Divided into three sections, the first considers the phylogenetic issues involving this area of the tree of life and the elucidation of those relationships that continue to trouble taxonomists. The second section considers the developmental biology of metazoan evolution including the development of the nervous system, sensory organs, and physiological maturation. Part three focuses on the evolution of pattern and process in the Metazoa.

Autorentext
Rob Desalle: American Museum of Natural History, Division of Invertebrate Zoology, New York, USABernd Schierwater: ITZ, Ecology and Evolution, TiHo Hannover, Germany

Klappentext
Tackling one of the most difficult and delicate of the evolutionary questions, this challenging book summarizes the more recent results in phylogenetics and developmental biology that address the evolution of key innovations in metazoans. Divided into three sections, the first considers the phylogenetic issues involving this area of the tree of lif

Inhalt
Introduction. A Phylogenomic Journey Through the Animal Tree of Life: Key Innovations in the Evolution of Metazoa. Tangled Roots in the Animal Tree of Life. Putting Animals in their Place Within a Context of Eukaryotic Innovations. Elucidating Animal Phylogeny: Advances in Knowledge and Forthcoming Challenges. Key Transitions in Animal Evolution: a Mitochondrial DNA Perspective. Pending Issues in Development and Phylogeny of Arthropods. The Earliest Animals: From Genes to Transitions. The Pre-nervous System and Beyond-Poriferan Milestones in the Early Evolution of the Metazoan Nervous System. A Key Innovation in Evolution, the Emergence of Neurogenesis: Cellular and Molecular Cues from Cnidarian Nervous Systems. From Cnidaria to "Higher Metazoa" in One Step. Basal Metazoan Sensory Evolution. Cnidarian Gene Expression Patterns and the Origins of Bilaterality-Are Cnidarians Reading the Same Game Plan as "Higher" Animals? Key Transitions During Animal Phototransduction Evolution: Co-duplication as a Null Hypothesis for the Evolutionary Origins of Novel Traits. Vertebrate Hox Genes and Specializations in Mammals. Pattern and Process at the Base of the Metazoan Tree of Life. Field Biology of Placozoans (Trichoplax): Distribution, Diversity, Biotic Interactions. Trichoplax and Placozoa: One of the Crucial Keys to Understanding Metazoan Evolution. A Food's-Eye View of Animal Transitions. Lost in Transition: The Biogeochemical Context of Animal Origins. Redefining Stem Cells and Assembling Germ Plasm: Key Transitions in the Evolution of the Germ Line. Questions and Discussion.

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