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Speciation is one of the great themes of evolutionary biology. This work offers information on species concepts, modes of speciation, the nature of reproductive barriers, the forces that drive divergence of populations, the genetic control of reproductive isolation, and the role played by hybrid zones and hybridization in speciation.

Evolution. Phylogeny --- Species. --- 575.858 --- Species. Speciation --- 575.858 Species. Speciation --- Species --- Speciation (Biology) --- Biology --- Genetics --- Hybridization --- Organisms

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Evolution. Phylogeny --- Espèces, origine des. --- Evolution. --- Species --- Espèces (Biologie) --- Species. --- SYS General Systematics --- evolution --- general systematics --- speciation --- Espèces, origine des. --- Espèces (Biologie) --- Speciation (Biology) --- Biology --- Genetics --- Hybridization --- Organisms --- Hybridization. --- Evolution --- Population genetics --- Speciation --- Species diversity --- POPULATION GENETICS

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Species. --- SYS General Systematics --- general systematics --- phylogeny --- species concepts --- Species --- Speciation (Biology) --- Biology --- Genetics --- Hybridization --- Organisms

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Although the species is one of the fundamental units of biological classification, there is remarkably little consensus among biologists about what defines a species, even within distinct sub-disciplines. The literature of paleobiology, in particular, is littered with qualifiers and cautions about applying the term to the fossil record or equating such species with those recognized among living organisms. In Species and Speciation in the Fossil Record, experts in the field examine how they conceive of species of fossil animals and consider the implications these different approaches have for thinking about species in the context of macroevolution. After outlining views of the Modern Synthesis of evolutionary disciplines and detailing the development within paleobiology of quantitative methods for documenting and analyzing variation within fossil assemblages, contributors explore the challenges of recognizing and defining species from fossil specimens-and offer potential solutions. Addressing both the tempo and mode of speciation over time, they show how with careful interpretation and a clear species concept, fossil species may be sufficiently robust for meaningful paleobiological analyses. Indeed, they demonstrate that the species concept, if more refined, could unearth a wealth of information about the interplay between species origins and extinctions, between local and global climate change, and greatly deepen our understanding of the evolution of life.

Evolutionary paleobiology. --- Fossils. --- Evolution (Biology) --- macroevolution. --- paleobiology. --- paleontology. --- speciation. --- species. --- tempo and mode. --- Evolutionary paleobiology --- Fossils

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How do we know what role a particular gene has ? How do some genes control the expression of others ? How do genes interact to form gene networks ? With its unique integration of genetics and molecular biology, Genetic Analysis probes fascinating questions such as these, detailing how our understanding of key genetic phenomena can be used to understand biological systems. Opening with a brief overview of key genetic principles, model organisms, and epigenetics, the book goes on to explore the use of gene mutations and the analysis of gene expression and activity. A discussion of the interactions of genes during suppression, synthetic enhancement, and epistasis follows, which is then expanded into a consideration of genetic networks and personal genomics.Drawing on the latest experimental tools, including CRISPR-Cas9 genome editing, microarrays, RNAi screens, and bioinformatics approaches, Genetic Analysis provides a state-of-the-art review of the field, but in a truly student-friendly manner. It uses extended case studies and text boxes to augment the narrative, taking the reader right to the forefront of contemporary research, without losing its clarity of explanation and insight.We are in an age where, despite knowing so much about biological systems, we are just beginning to realise how much more there is still to understand. Genetic Analysis is the ideal guide to how we can use the awesome power of molecular genetics to further our understanding.

575.08 --- General genetics. General cytogenetics. Immunogenetics. Evolution. Speciation. Phylogeny--Biological techniques. Experimental methods. Equipment --- Génétique. --- Expression génique. --- Cellules eucaryotes.