Results 271 to 280 of about 6,648,546 (317)
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Species Concepts, Species Boundaries and Species Identification: A View from the Tropics
Systematic Biology, 2005The species has been treated as a fundamental unit in biology (Hull, 1977) and, more recently, in biodiversity conservation (Sites and Crandall, 1997). Almost all studies in biology, whether at the level of molecules, cells, individuals or populations, are typically referenced to the level of the species.
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bchm, 2007
Abstract A good system for the naming and classification of peptidases can contribute much to the study of these enzymes. Having already described the building of families and clans in the MEROPS system, we here focus on the lowest level in the hierarchy, in which the huge number of individual peptidase proteins are assigned to a lesser ...
Alan J, Barrett, Neil D, Rawlings
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Abstract A good system for the naming and classification of peptidases can contribute much to the study of these enzymes. Having already described the building of families and clans in the MEROPS system, we here focus on the lowest level in the hierarchy, in which the huge number of individual peptidase proteins are assigned to a lesser ...
Alan J, Barrett, Neil D, Rawlings
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1974
Publisher Summary This chapter describes Leucocytozoon. It discusses the prevalence, taxonomy, life cycles, ultrastructure, pathogenesis, and pathology of these avian blood parasites, together with treatment in terms of prevention and control, immunity and cultivation.
A M, Fallis, S S, Desser, R A, Khan
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Publisher Summary This chapter describes Leucocytozoon. It discusses the prevalence, taxonomy, life cycles, ultrastructure, pathogenesis, and pathology of these avian blood parasites, together with treatment in terms of prevention and control, immunity and cultivation.
A M, Fallis, S S, Desser, R A, Khan
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Chaos: An Interdisciplinary Journal of Nonlinear Science, 2008
We propose and analyze a model of evolution of species based upon a general description of phenotypes in terms of a single quantifiable characteristic. In the model, species spontaneously arise as solitary waves whose members almost never mate with those in other species, according to the rules laid down.
Bees, M. A. +2 more
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We propose and analyze a model of evolution of species based upon a general description of phenotypes in terms of a single quantifiable characteristic. In the model, species spontaneously arise as solitary waves whose members almost never mate with those in other species, according to the rules laid down.
Bees, M. A. +2 more
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Theory in Biosciences, 2005
The biotic world is self-evidently "packaged" into units, of which the most basic is the species. It is necessary to develop an accurate understanding of what species are and how they are to be identified before we can proceed to more complex analyses of the evolutionary histories and relationships of extinct and extant taxa at all levels of the ...
Ian Tattersall, Kenneth Mowbray
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The biotic world is self-evidently "packaged" into units, of which the most basic is the species. It is necessary to develop an accurate understanding of what species are and how they are to be identified before we can proceed to more complex analyses of the evolutionary histories and relationships of extinct and extant taxa at all levels of the ...
Ian Tattersall, Kenneth Mowbray
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2017
This lab introduces students to species concepts and basic computer-based tree-building methods using published nuclear and mitochondrial sequence data for Plethodon salamanders.
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This lab introduces students to species concepts and basic computer-based tree-building methods using published nuclear and mitochondrial sequence data for Plethodon salamanders.
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SIGGRAPH Asia 2012 Art Gallery, 2012
In the 'Species series', basic physics, electronics, and mechanics are combined with various digital technologies to create robotic species. The different levels of technological complexities reflect the evolutionary histories of robotic species. The ancient robotic species have simpler body structures and behaviors.
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In the 'Species series', basic physics, electronics, and mechanics are combined with various digital technologies to create robotic species. The different levels of technological complexities reflect the evolutionary histories of robotic species. The ancient robotic species have simpler body structures and behaviors.
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2018
This chapter develops a reading practice for the Anthropocene by tracing the reflections on extinction that recur throughout Alfred Tennyson’s magisterial elegy, In Memoriam (1850). It asks how the poem’s treatment of extinction changes when it is read as an account of anthropogenic extinction, the decimation of species arising explicitly from human ...
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This chapter develops a reading practice for the Anthropocene by tracing the reflections on extinction that recur throughout Alfred Tennyson’s magisterial elegy, In Memoriam (1850). It asks how the poem’s treatment of extinction changes when it is read as an account of anthropogenic extinction, the decimation of species arising explicitly from human ...
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2018
Over time the complex idea of "species" has evolved, yet its meaning is far from resolved. This comprehensive work is a fresh look at an idea central to the field of biology by tracing its history from antiquity to today. Species is a benchmark exploration and clarification of a concept fundamental to the past, present, and future of the natural ...
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Over time the complex idea of "species" has evolved, yet its meaning is far from resolved. This comprehensive work is a fresh look at an idea central to the field of biology by tracing its history from antiquity to today. Species is a benchmark exploration and clarification of a concept fundamental to the past, present, and future of the natural ...
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What are fungal species and how to delineate them?
Fungal Diversity, 2021K W Thilini Chethana +2 more
exaly