Results 301 to 310 of about 445,514 (353)
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Science, 1961
The systematic position of the small invertebrate group, Priapulida, is uncertain. In more recent publications they are classified usually as pseudocoelomates in the division Aschelminthes. A histological investigation of Priapulus caudatus , a widely distributed species, reveals the body cavity to be a coelom, its ...
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The systematic position of the small invertebrate group, Priapulida, is uncertain. In more recent publications they are classified usually as pseudocoelomates in the division Aschelminthes. A histological investigation of Priapulus caudatus , a widely distributed species, reveals the body cavity to be a coelom, its ...
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2003
Diatoms are among the most diverse groups of eukaryotic microorganisms and there are probably well in excess of 100,000 species (Mann and Droop 1996).The beauty and unbelievable variation of their intricately shaped and ornamented silica cell wall, called the frustule, have attracted taxonomists and naturalists alike (Round et al. 1990). More recently,
Wiebe H, Kooistra +3 more
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Diatoms are among the most diverse groups of eukaryotic microorganisms and there are probably well in excess of 100,000 species (Mann and Droop 1996).The beauty and unbelievable variation of their intricately shaped and ornamented silica cell wall, called the frustule, have attracted taxonomists and naturalists alike (Round et al. 1990). More recently,
Wiebe H, Kooistra +3 more
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Annual Review of Entomology, 1997
▪ Abstract The vitality of the phylogenetic dialogue in trichopterology, especially since 1967, is evidenced by the high quality and large number of published phylogenetic inferences concerning caddisflies and the continuing spirited exchange of opinions about some differences among those ideas. Monophyly for Trichoptera seems well argued.
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▪ Abstract The vitality of the phylogenetic dialogue in trichopterology, especially since 1967, is evidenced by the high quality and large number of published phylogenetic inferences concerning caddisflies and the continuing spirited exchange of opinions about some differences among those ideas. Monophyly for Trichoptera seems well argued.
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American Journal of Botany, 2014
• Premise of the study: The Lamiidae, a clade composed of approximately 15% of all flowering plants, consists of five orders: Boraginales, Gentianales, Garryales, Lamiales, and Solanales; and four families unplaced in an order: Icacinaceae, Metteniusiaceae, Oncothecaceae, and Vahliaceae.
Nancy F, Refulio-Rodriguez +1 more
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• Premise of the study: The Lamiidae, a clade composed of approximately 15% of all flowering plants, consists of five orders: Boraginales, Gentianales, Garryales, Lamiales, and Solanales; and four families unplaced in an order: Icacinaceae, Metteniusiaceae, Oncothecaceae, and Vahliaceae.
Nancy F, Refulio-Rodriguez +1 more
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1969
Publisher Summary This chapter discusses the phylogeny of immunoglobulins. The chapter offers a definitive review of the immunoglobulins of various species. The chapter provides the phylogenetic tree based data that are used as a perspective for the understanding of the development and present structure of the complex immunoglobulin systems of man ...
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Publisher Summary This chapter discusses the phylogeny of immunoglobulins. The chapter offers a definitive review of the immunoglobulins of various species. The chapter provides the phylogenetic tree based data that are used as a perspective for the understanding of the development and present structure of the complex immunoglobulin systems of man ...
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2011
Publisher Summary This chapter discusses the study of living of phylogenetically ancient organisms such as insects, fish, amphibians, reptiles, and primitive mammals that give clues to the function of sleep. This phylogenetic approach toward investigating the origins of sleep has not been without controversy, and there is disagreement in the ...
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Publisher Summary This chapter discusses the study of living of phylogenetically ancient organisms such as insects, fish, amphibians, reptiles, and primitive mammals that give clues to the function of sleep. This phylogenetic approach toward investigating the origins of sleep has not been without controversy, and there is disagreement in the ...
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Endeavour, 1980
Abstract The life of animals can be sustained only if the cellular environment can be closely controlled. Elaborate processes have, therefore, been evolved to detect and eliminate foreign material in the body, including tumour cells. An understanding of these processes is of great medical importance.
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Abstract The life of animals can be sustained only if the cellular environment can be closely controlled. Elaborate processes have, therefore, been evolved to detect and eliminate foreign material in the body, including tumour cells. An understanding of these processes is of great medical importance.
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Journal of the History of Biology, 2020
The concept that renders morphology a tool for phylogeny reconstruction is homology. The concept of homology is rooted in pre-evolutionary idealistic morphology. The claim that the goal of idealistic morphology was the seriability of form may sound paradoxical given that this discipline proceeded within a framework of strictly delimited types.
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The concept that renders morphology a tool for phylogeny reconstruction is homology. The concept of homology is rooted in pre-evolutionary idealistic morphology. The claim that the goal of idealistic morphology was the seriability of form may sound paradoxical given that this discipline proceeded within a framework of strictly delimited types.
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Fundamenta Informaticae, 2007
In this paper we propose two new metrics defined on the space of phylogenetic trees. The problem of determining how distant two trees are from each other is crucial because many various methods exist for reconstructing phylogenetic trees from molecular data.
Lukasz Bolikowski, Anna Gambin
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In this paper we propose two new metrics defined on the space of phylogenetic trees. The problem of determining how distant two trees are from each other is crucial because many various methods exist for reconstructing phylogenetic trees from molecular data.
Lukasz Bolikowski, Anna Gambin
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2008
Grid computing defines the combination of computers or clusters of computers across networks, like the internet, to form a distributed supercomputer. This infrastructure allows scientists to process complex and time consuming computations in parallel on demand.
van der Wath, R. C. +6 more
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Grid computing defines the combination of computers or clusters of computers across networks, like the internet, to form a distributed supercomputer. This infrastructure allows scientists to process complex and time consuming computations in parallel on demand.
van der Wath, R. C. +6 more
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