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Origin of new evolutionary lineages

Michael L. Arnold

in Evolution through Genetic Exchange

Published in print:
2007
Published Online:
April 2010
ISBN:
9780199229031
eISBN:
9780191728266
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199229031.003.0007
Subject:
Biology, Evolutionary Biology / Genetics

This chapter examines the effects of gene exchange on the formation of new evolutionary lineages. In some cases this can be viewed as the origin of new species, in others the organisms formed from ... More


Hybrid fitness

Michael L. Arnold

in Evolution through Genetic Exchange

Published in print:
2007
Published Online:
April 2010
ISBN:
9780199229031
eISBN:
9780191728266
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199229031.003.0005
Subject:
Biology, Evolutionary Biology / Genetics

This chapter illustrates the fact that hybrid genotypes, like any other set of genotypes, demonstrate a range of fitness estimates. It demonstrates this point with examples involving natural ... More


The role of species concepts

Michael L. Arnold

in Evolution through Genetic Exchange

Published in print:
2007
Published Online:
April 2010
ISBN:
9780199229031
eISBN:
9780191728266
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199229031.003.0002
Subject:
Biology, Evolutionary Biology / Genetics

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 ... More


Natural hybridization as a catalyst of rapid evolutionary change

Michael L. Arnold, Jennafer A.P. Hamlin, Amanda N. Brothers, and Evangeline S. Ballerini

in Rapidly Evolving Genes and Genetic Systems

Published in print:
2012
Published Online:
December 2013
ISBN:
9780199642274
eISBN:
9780191774751
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199642274.003.0025
Subject:
Biology, Evolutionary Biology / Genetics

Natural hybridization is a widespread phenomenon, detected among clades of fungi, plants, and animals. The potential outcomes of genetic exchange include adaptive trait evolution, speciation, and ... More


Genetic exchange and humans

Michael L. Arnold

in Divergence with Genetic Exchange

Published in print:
2015
Published Online:
November 2015
ISBN:
9780198726029
eISBN:
9780191792960
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198726029.003.0008
Subject:
Biology, Evolutionary Biology / Genetics

This chapter begins with information from analyses of genomic and phenotypic traits resulting in tests of alternative models of human evolution. The remaining sections illustrate how genetic exchange ... More


Genetic exchange: An historical consideration

Michael L. Arnold

in Divergence with Genetic Exchange

Published in print:
2015
Published Online:
November 2015
ISBN:
9780198726029
eISBN:
9780191792960
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198726029.003.0001
Subject:
Biology, Evolutionary Biology / Genetics

The history of investigations into genetic exchange—resulting from natural hybridization, horizontal gene transfer, and viral recombination—between both closely- and distantly-related organisms has ... More


Genetic exchange and fitness

Michael L. Arnold

in Divergence with Genetic Exchange

Published in print:
2015
Published Online:
November 2015
ISBN:
9780198726029
eISBN:
9780191792960
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198726029.003.0005
Subject:
Biology, Evolutionary Biology / Genetics

Since the time of Darwin’s Origin, natural hybridization between divergent populations has often been viewed as an evolutionary dead end. A common rationale for this conclusion has proceeded from the ... More


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