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On the nature of global classificationMolecular sequencing technology has brought biology into the era of global (universal) classification. Methodologically and philosophically, global classification differs significantly from traditional, local classification. The need for uniformity requires that higher level taxa be defined on the molecular level in terms of universally homologous functions. A global classification should reflect both principal dimensions of the evolutionary process: genealogical relationship and quality and extent of divergence within a group. The ultimate purpose of a global classification is not simply information storage and retrieval; such a system should also function as an heuristic representation of the evolutionary paradigm that exerts a directing influence on the course of biology. The global system envisioned allows paraphyletic taxa. To retain maximal phylogenetic information in these cases, minor notational amendments in existing taxonomic conventions should be adopted.
Document ID
20040090291
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wheelis, M. L.
(University of California Davis 95616)
Kandler, O.
Woese, C. R.
Date Acquired
August 21, 2013
Publication Date
April 1, 1992
Publication Information
Publication: Proceedings of the National Academy of Sciences of the United States of America
Volume: 89
ISSN: 0027-8424
Subject Category
Exobiology
Distribution Limits
Public
Copyright
Other
Keywords
NASA Program Exobiology
NASA Discipline Number 52-30
Non-NASA Center
NASA Discipline Exobiology

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