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  • Nature Publishing Group  (7)
  • Oxford :Oxford University Press,  (1)
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  • 1
    Online-Ressource
    Online-Ressource
    Oxford :Oxford University Press,
    Schlagwort(e): Evolution (Biology). ; Phylogeny. ; Electronic books.
    Beschreibung / Inhaltsverzeichnis: This is a comprehensive reference source on the evolution of life, especially the family tree of organisms and when they originated in time. More than 100 experts on different organisms have distilled the latest research on the evolution of life, primarily from analyses of gene sequences but also from the fossil record. - ;The evolutionary history of life includes two primary components: phylogeny and timescale. Phylogeny refers to the branching order (relationships) of species or other taxa within a group and is crucial for understanding the inheritance of traits and for erecting classifications. However, a timescale is equally important because it provides a way to compare phylogeny directly with the evolution of other organisms and with planetary history such as geology, climate, extraterrestrial. impacts, and other features. The Timetree of Life is the first reference book to synthesize the wealth of information relating to the temporal component of phylogenetic trees. In the past, biologists have relied exclusively upon the fossil record to infer an evolutionary timescale. However, recent revolutionary advances in molecular biology have made it possible to not only estimate the relationships of many groups of organisms, but also to estimate their times of divergence with molecular clocks. The routine. estimation and utilization of these so-called 'time-trees' could add exciting new dimensions to biology including enhanced opportunities to integrate large molecular data sets with fossil and biogeographic evidence (and thereby foster greater communication between molecular and traditional systematists). They. could help estimate not only ancestral character states but also evolutionary rates in numerous categories of organismal phenotype; establish more reliable associations between causal historical processes and biological outcomes; develop
    Materialart: Online-Ressource
    Seiten: 1 online resource (1268 pages)
    Ausgabe: 1st ed.
    ISBN: 9780191560156
    DDC: 576.8
    Sprache: Englisch
    Anmerkung: Cover Page -- Title Page -- Copyright Page -- Contents -- Foreword -- Preface -- List of Contributors -- INTRODUCTION -- Discovering the Timetree of Life -- Timetrees: beyond cladograms, phenograms, and phylograms -- The geologic time scale -- Calibrating and constraining molecular clocks -- TIMETREES -- Life -- SUPERKINGDOMS -- Archaebacteria -- Eubacteria -- Eukaryotes (Eukaryota) -- PROTISTS -- Haptophyte algae (Haptophyta) -- Diatoms (Bacillariophyta) -- PLANTS -- Land plants (Embryophyta) -- Mosses (Bryophyta) -- Liverworts (Marchantiophyta) -- Ferns -- Gymnosperms -- Flowering plants (Magnoliophyta) -- Magnoliids -- Eudicots -- Asterids -- Eurosid I -- Eurosid II -- Monocots -- FUNGI -- Fungi -- ANIMALS -- Animals (Metazoa) -- INVERTEBRATES -- Cnidarians (Cnidaria) -- Scaphopod mollusks (Scaphopoda) -- Cephalopod mollusks (Cephalopoda) -- Nematodes (Nematoda) -- Arthropods (Arthropoda) -- Spiders (Araneae) -- Holometabolous insects (Holometabola) -- Bees, ants, and stinging wasps (Aculeata) -- True flies (Diptera) -- Beetles (Coleoptera) -- Lacewings (Neuroptera) -- Crabs, shrimps, and lobsters (Decapoda) -- Stalked and acorn barnacles (Thoracica) -- Sea urchins (Echinoidea) -- VERTEBRATES -- Vertebrates (Vertebrata) -- FISHES -- Jawless fishes (Cyclostomata) -- Cartilaginous fishes (Chondrichthyes) -- Ray-finned fishes (Actinopterygii) -- Sturgeons and paddlefishes (Acipenseriformes) -- Teleost fishes (Teleostei) -- Notothenioid fishes (Notothenioidei) -- Labyrinth fishes (Anabantoidei) -- Lungfishes (Dipnoi) -- AMPHIBIANS -- Amphibians (Lissamphibia) -- Frogs and toads (Anura) -- Salamanders (Caudata) -- Caecilians (Gymnophiona) -- AMNIOTES -- Amniotes (Amniota) -- REPTILES -- Lizards, snakes, and amphisbaenians (Squamata) -- Snakes (Serpentes) -- Turtles (Testudines) -- Crocodylians (Crocodylia) -- BIRDS -- Birds (Aves). , Ratites and tinamous (Paleognathae) -- Waterfowl and gamefowl (Galloanserae) -- Advanced birds (Neoaves) -- Passerine birds (Passeriformes) -- Shorebirds (Charadriiformes) -- Diurnal birds of prey (Falconiformes) -- Cranes, rails, and allies (Gruiformes) -- Woodpeckers, toucans, barbets, and allies (Piciformes) -- Owls (Strigiformes) -- Swifts, treeswifts, and hummingbirds (Apodiformes) -- MAMMALS -- Mammals (Mammalia) -- Monotremes (Prototheria) -- Marsupials (Metatheria) -- Placental mammals (Eutheria) -- Armadillos, anteaters, and sloths (Xenarthra) -- Tenrecs and golden moles (Afrosoricida) -- Primates (Primates) -- Pikas, hares, and rabbits (Lagomorpha) -- Rodents (Rodentia) -- Hedgehogs, shrews, moles, and solenodons (Eulipotyphla) -- Bats (Chiroptera) -- Carnivores (Carnivora) -- Rhinoceroses, tapirs, and horses (Perissodactyla) -- Whales and even-toed ungulates (Cetartiodactyla) -- Index.
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  • 2
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 425 (2003), S. 669-670 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The discovery of a living coelacanth in 1938 captured public attention because it represented an ancient lineage of fishes thought to have been extinct for some 80 million years. Now, a living amphibian with unusually deep evolutionary roots has been discovered in India. Writing on page 711 ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 381 (1996), S. 226-229 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Molecular time estimation of evolutionary divergence requires genes that are evolving at a relatively constant rate, which often limits the number of sequences available for analysis8'9. Fortunately, the widespread use of model organisms for genetic research has generated a large number of gene ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Among extant reptiles only two lineages are known to have evolved venom delivery systems, the advanced snakes and helodermatid lizards (Gila Monster and Beaded Lizard). Evolution of the venom system is thought to underlie the impressive radiation of the advanced snakes (2,500 of 3,000 snake ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 363 (1993), S. 501-502 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - The evolutionary transition from fishes to tetrapods, which occurred about 400 million years ago, has come under intense scrutiny in the light of new molecular data and reinterpretation of the morphological evidence 4. There is little disagreement that tetrapods are most closely related to ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 349 (1991), S. 680-683 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Because the of the quadratic frequency dependence of Rs in superconductors1, as opposed to the square-root dependence in normal metals, there is a great incentive to reduce Rs in superconductors so that operation of devices below the cross-over frequency benefit from a lower Rs than that of a ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 356 (1992), S. 708-710 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] To determine the maternal ancestry of the unisexual salamander (genus Ambystoma) hybrids, we sequenced part of the mitochondrial (mt) cytochrome b gene from 46 salamanders, including diploid and triploid hybrid combinations of all four bisexual species (A. jeffersonianum, A. laterale, A. texanum, ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 364 (1993), S. 375-375 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - There are no natural forests remaining in Haiti, apart from a few isolated patches, and the total forest cover is below one per cent1'2, making Haiti's forests among the most severely depleted ecosystems on Earth. By comparison, forest cover in tropical Central and South America averages 27 ...
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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