Geographic Variation, Speciation and Clines. (MPB-10), Volume 10 / / John A. Endler.

Geographic Variation, Speciation and Clines explores the origins and development of geographic variation, divergence, and speciation. In particular it is concerned with genetic divergence as it is usually found on continents, among groups of populations isolated only by distance. Although earlier wr...

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Superior document:Title is part of eBook package: De Gruyter Princeton University Press eBook-Package Archive 1927-1999
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Place / Publishing House:Princeton, NJ : : Princeton University Press, , [2020]
©1978
Year of Publication:2020
Language:English
Series:Monographs in Population Biology ; 98
Online Access:
Physical Description:1 online resource (262 p.)
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520 |a Geographic Variation, Speciation and Clines explores the origins and development of geographic variation, divergence, and speciation. In particular it is concerned with genetic divergence as it is usually found on continents, among groups of populations isolated only by distance. Although earlier writers on this topic considered the effects of geography and dispersal, intense geographic differentiation and speciation were thought to require complete isolation. Professor Endler shows how geographic differentiation and speciation may develop in spite of continuous gene flow. Following a review of the diverse and scattered literature on gene flow and population differentiation, the author discusses the relationships among gene flow, dispersal, and migration. He then summarizes the factors which limit the geographic extent of gene flow, and those which allow steep clines to develop in the absence of barriers to gene flow. His analysis draws on examples from the field, experiments, and single- and multiple-locus models. The mechanism and conditions for parapatric speciation are presented: steepening clines, development into hybrid zones, and the evolution of sexual isolation. In the final chapter the author considers the interpretation of natural clines and the associated geographic patterns of subspecies and species. 
538 |a Mode of access: Internet via World Wide Web. 
546 |a In English. 
588 0 |a Description based on online resource; title from PDF title page (publisher's Web site, viewed 24. Mai 2022) 
650 0 |a Clines. 
650 0 |a Evolution (Biology). 
650 7 |a SCIENCE / Life Sciences / Ecology.  |2 bisacsh 
653 |a Allo-parapatric. 
653 |a Allopatry. 
653 |a Cline. 
653 |a Coadaptation. 
653 |a Competition. 
653 |a Contact, primary. 
653 |a Deme. 
653 |a Density effects. 
653 |a Differentiation, measurement of. 
653 |a Disjunction. 
653 |a Emergence time. 
653 |a Gene flow. 
653 |a Heterozygous advantage. 
653 |a Hybrid zone. 
653 |a Intergradation, primary. 
653 |a Mating, assortative. 
653 |a Null point. 
653 |a Overlap. 
653 |a Parapatry. 
653 |a Rassenkreis. 
653 |a Shifting effects. 
653 |a Speciation. 
653 |a Sympatry. 
653 |a allopatrie. 
653 |a b, slope of selection gradient. 
653 |a effects. 
653 |a modification. 
653 |a secondary. 
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