Results 271 to 280 of about 39,995 (294)

MONOPHYLY AND COMPARISONS BETWEEN TREES

Cladistics, 1994
Abstract—The Farris method for assessing the empirical status of groups, as either monophyletic, paraphyletic or polyphyletic, is discussed. The reasons for presenting the method in terms of the behaviour of abstract, rather than real, characters are upheld.
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Mitochondrial genomic investigation of flatfish monophyly

Gene, 2014
We present the first study to use whole mitochondrial genome sequences to examine phylogenetic affinities of the flatfishes (Pleuronectiformes). Flatfishes have attracted attention in evolutionary biology since the early history of the field because understanding the evolutionary history and patterns of diversification of the group will shed light on ...
Matthew A. Campbell, J. Andrés López, Takashi P. Satoh, Wei-Jen Chen, Masaki Miya   +4 more
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Monophyly and Relationships of the Argentinoid Fishes

Copeia, 1992
Evidence of monophyly and relationships of the Argentinoidei is provided, based on a phylogenetic analysis including aregentinoids, osmeroids, and other euteleosts. the Argentinoidei is monophyletic and is composed of two monophyletic clades, Argentinoidea and Alepocephaloidea.
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MicroRNAs support the monophyly of enteropneust hemichordates

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2013
ABSTRACTUnderstanding the evolutionary history of deuterostomes requires elucidating the phylogenetic interrelationships amongst the constituent taxa. Although the monophyly and interrelationships among the three principal groups—the chordates, the echinoderms, and the hemichordates—are well established, as are the internal relationships among the ...
Billie J. Swalla, Billie J. Swalla, Benjamin L. King, Yi-Hsien Su, Maria Ina Arnone, Kevin J. Peterson   +5 more
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Assessing the monophyly of polyploid Gossypium species

Plant Systematics and Evolution, 2012
The origin and monophyly of the polyploid cotton (Gossypium) species has been largely accepted, despite the lack of explicit phylogenetic evidence. Recent studies in other polyploid systems have demonstrated that multiple origins for polyploid species are much more common than once thought, raising the possibility that Gossypium polyploids also had ...
Corrinne E. Grover, R. J. Wanzek, Kara Grupp, Jonathan F. Wendel   +3 more
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Phylogenetic support for the monophyly of proetide trilobites

Lethaia, 2015
The monophyly of the order Proetida, the only trilobite group to survive the end-Devonian mass extinction, has been regularly questioned since its erection almost three decades ago. Through analysis of a novel phylogenetic data set comprising 114 characters coded for 55 taxa, including both traditional members of the Proetida along with a number of ...
Paul A. Selden, Paul A. Selden, James C. Lamsdell   +2 more
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Deuterostome Monophyly and Phylogeny

1987
The abundant data of developmental biology, both descriptive and experimental, are scattered through many serial publications and symposium volumes. However, the diversity that has been investigated by classical and modern techniques is relatively small. This is related to the reductionist aspect of much developmental research, to a minimal interest in
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The Concept of Monophyly: A Speculative Essay

Biology & Philosophy, 1999
The concept of monophyly is central to much of modern biology. Despite many efforts over many years, important questions remain unanswered that relate both to the concept itself and to its various applications. This essay focuses primarily on four of these: i) Is it possible to define monophyly operationally, specifically with respect to both the ...
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Homeostasis, Higher Taxa, and Monophyly

Philosophy of Science, 2010
Several authors have argued that higher taxa are monophyletic homeostatic property cluster natural kinds. On the traditional definition of monophyly, this will not work: the emergence of taxon-defining homeostatic property clusters would not always correspond to unique speciation events. An alternative conception of monophyly is developed and advocated,
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The Question of Metazoan Monophyly and the Fossil Record

1998
As metazoans, almost inevitably we have a chauvinistic interest in our origins. We must also acknowledge, however, that the acquisition of specialized tissues - notably muscles to enable macroscopic motility, and nerves to transmit information - have transformed the world.
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