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Evolution through Genetic Exchange$
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Michael L. Arnold

Print publication date: 2007

Print ISBN-13: 9780199229031

Published to Oxford Scholarship Online: April 2010

DOI: 10.1093/acprof:oso/9780199229031.001.0001

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The role of species concepts

The role of species concepts

Chapter:
(p.23) Chapter 2 The role of species concepts
Source:
Evolution through Genetic Exchange
Author(s):

Michael L. Arnold

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199229031.003.0002

This chapter introduces the topic of species concepts and the study of genetic exchange. It uses only four (biological, phylogenetic, cohesion, and prokaryotic) of the many definitions to illustrate how our concept of (i) what a species is and (ii) how it originates influences what evolutionary importance (or lack there of) we ascribe to genetic exchange. The chapter concludes by suggesting how we might use species concepts — often the bane of evolutionists interested in gene exchange — to afford a clearer understanding of the importance of natural hybridization and lateral gene transfer.

Keywords:   genetic exchange, biological species concept, phylogenetic species, cohesion species, prokaryotic species, natural hybridization, lateral gene transfer

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