New PDF release: Animal Evolution: Genomes, Fossils, and Trees

By Maximilian J. Telford, D.T.J. Littlewood

ISBN-10: 0199549427

ISBN-13: 9780199549429

ISBN-10: 0199570302

ISBN-13: 9780199570300

Animal lifestyles, now and during the last part billion years, is quite diversified. Describing and figuring out the evolution of this variety of physique plans - from vertebrates similar to people and fish to the varied invertebrate teams together with sponges, bugs, molluscs, and the various teams of worms - is a tremendous objective of evolutionary biology. during this booklet, a gaggle of major researchers undertake a latest, built-in method of describe how present molecular genetic concepts and disciplines as diversified as palaeontology, embryology, and genomics were mixed, leading to a dramatic renaissance within the research of animal evolution. the decade has visible starting to be curiosity in evolutionary biology fuelled by way of a wealth of knowledge from molecular biology. sleek phylogenies integrating facts from molecules, embryological facts, and morphology of dwelling and fossil taxa offer a large consensus of the key branching styles of the tree of existence; furthermore, the hyperlinks among phenotype and genotype are more and more good understood. This has ended in a competent tree of relationships that has been largely authorized and has spawned quite a few new and fascinating questions that require a reassessment of the origins and radiation of animal lifestyles. the focal point of this quantity is on the point of significant animal teams, the morphological concepts that outline them, and the mechanisms of switch to their embryology that experience led to their evolution. present learn topics and destiny clients are highlighted together with phylogeny reconstruction, comparative developmental biology, the price of other resources of knowledge and the significance of fossils, homology review, personality evolution, phylogeny of significant teams of animals, and genome evolution. those subject matters are built-in within the mild of a 'new animal phylogeny', to supply clean insights into the styles and techniques of animal evolution. Animal Evolution provides a well timed and accomplished assertion of development within the box for tutorial researchers requiring an authoritative, balanced and updated assessment of the subject. it's also meant for either higher point undergraduate and graduate scholars taking classes in animal evolution, molecular phylogenetics, evo-devo, comparative genomics and linked disciplines.

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Extra resources for Animal Evolution: Genomes, Fossils, and Trees

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2 Phylogenetics: are there any ‘living models’ of early metazoan ancestors? 1 The case for choanoflagellates Choanoflagellates and sponges have classically been thought to straddle the evolutionary divide between metazoans and their unicellular ancestors. 1). This resemblance was fi rst noted by Henry James-Clark in 1866, prompting one of two interpretations: either that sponges and choanoflagellates are derived from an ancestral species that used choanoflagellate-like cells to capture bacterial prey, or that these cell types are only superficially similar and have evolved independently.

Arrows indicate flagellum and braces indicate the collar of individual cells. 2 Phylogenetic relationships among metazoans and their close relatives. The preponderance of available evidence supports sponges as the earliest branching metazoan lineage and choanoflagellates as the closest living relatives of the Metazoa. As such, comparisons with these lineages can uniquely inform us about the nature of the last common metazoan ancestor (white circle) and the last unicellular ancestor of Metazoa (black circle).

Cotton, James G. Gehling, and Davide Pisani Unravelling the timing of the metazoan radiation is crucial for elucidating the macroevolutionary processes associated with the Cambrian explosion. Because estimates of metazoan divergence times derived from molecular clocks range from quite shallow (Ediacaran) to very deep (Mesoproterozoic), it has been difficult to ascertain whether there is concordance or quite dramatic discordance between the genetic and geological fossil records. Here, using a range of molecular clock methods, we show that the major pulse of metazoan divergence times was during the Ediacaran, consistent with a synoptic reading of the Ediacaran macrobiota.

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Animal Evolution: Genomes, Fossils, and Trees by Maximilian J. Telford, D.T.J. Littlewood

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