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Evolution through genetic exchange
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ISBN: 1281160369 9786611160364 019152462X 1435606833 9780191524622 9781281160362 6611160361 9780191728266 0191728268 9780198570066 0198570066 9780199229031 0199229031 9781435606838 Year: 2006 Publisher: Oxford ; New York : Oxford University Press,

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Abstract

More and more data indicate that evolution has resulted in lineages consisting of mosaics of genes derived from different ancestors. It is therefore becoming increasingly clear that the tree is an inadequate metaphor of evolutionary change. In this book, Arnold promotes the 'web-of-life' metaphor as a more appropriate representation of evolutionary change in all lifeforms. - ;Even before the publication of Darwin's Origin of Species, the perception of evolutionary change has been a tree-like pattern of diversification - with divergent branches spreading further and further from the trunk. In t


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Lateral gene transfer in evolution
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ISBN: 1489986618 1461477794 1461477808 Year: 2013 Publisher: New York : Springer,

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Abstract

Although the phenomenon of lateral gene transfer has been known since the 1940s, it was the genomics era that has really revealed the extent and many facets of this evolutionary/genetic phenomenon. Even in the early 2000s with but a handful of genomes available, it became clear that the nature of microorganisms is full of genetic exchange between lineages that are sometimes far apart. The years following this saw an explosion of genomic data, which shook the "tree of life" and also raised doubts about the most appropriate species concepts for prokaryotes. This book represents the manyfold contributions of LGT to the evolution of micro and, to an extent, macroorganisms by focusing on the areas where it has the largest impact: metabolic innovations and adaptations and speciation.

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