Results 221 to 230 of about 278,207 (241)

Taxonomy and phylogeny [PDF]

open access: possibleThe Botanical Review, 1942
INTRODUCTION Scope of the Paper 247 Derivations and Definitions of Terms .248 HISTORICAL DEVELOPMENT OF PLANT CLASSIFICATION . .252 Pre-Linnaean Systems 252 Linnaeus 256 Post-Linnaean and Pre-Darwinian Systems .256 Darwin .264 Post-Darwinian Systems ...
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Morphology and Phylogeny

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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Phylogeny of Priapulida [PDF]

open access: possibleScience, 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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A new fungal phylum, the Glomeromycota: phylogeny and evolution * * Dedicated to Manfred Kluge (Tech

, 2001
The ecologically and economically important arbuscular mycorrhizal (AM) fungi, crucial in the ecology and physiology of land plants, and the endocytobiotic fungus, Geosiphon pyriformis, are phylogenetically analysed by their small subunit (SSU) rRNA gene
A. Schuler, Daniel Schwarzott, C. Walker
semanticscholar   +1 more source

A PHYLOGENY OF THE BASIDIOMYCETES

Canadian Journal of Botany, 1955
Thirteen phylogenetic principles of general or mycologicai application are presented. Adherence to these principles makes it difficult to accept any starting point for the Basidiomycetes other than a primitive ascomycete very close to Taphrina and parasitic upon ancient ferns. From the ancestral basidiomycete one line led to the rusts and another, via
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The Phylogeny of the Diatoms

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. C. F. Kooistra   +3 more
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THE PHYLOGENY OF THE SALIENTIA

Biological Reviews, 1963
Summary1. The essentially recent skeletal patterns of fossil Salientia indicates that the evolutionary relationships of the order must continue to be assessed on evidence obtained chiefly from a study of recent forms.2. The morphology and morphogenesis of the more important criteria employed in taxonomic analyses are described.
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The Phylogeny of Prokaryotes

Science, 1980
For the first time a single experimental approach, 16 S ribosomal RNA sequence characterization, has been used to develop an overview of phylogenetic relationships in the bacterial world. The technique permits the tracing of relationships back to the common ancestor of all extant life.
Ralph S. Tanner   +18 more
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Phylogeny: Discrete and Random Processes in Evolution

, 2016
Phylogenetics is a topical and growing area of research. Phylogenies (phylogenetic trees and networks) allow biologists to study and graph evolutionary relationships between different species.
M. Steel
semanticscholar   +1 more source

On the phylogeny of t-RNA's

Journal of Theoretical Biology, 1972
Abstract t-RNA sequences have been aligned to maximize matches in corresponding positions. The sequences have subsequently been divided into two parts, the “squelette” (skeleton) and “muscle” positions. A test of homology based on the binomial approach has been developed and was applied to the “muscle” positions of t-RNA.
Jeff R. Cordeau   +2 more
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