Book

Selection

Graham Bell

Published in print December 2007 | ISBN: 9780198569725
Published online May 2008 | e-ISBN: 9780191717741 | DOI: https://dx.doi.org/10.1093/acprof:oso/9780198569725.001.0001
Selection

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Adaptive radiation: diversity and specialization

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 25223 words.

Selection in complex and structured environments is likely to cause the divergence of differently adapted lines. This will lead to a diverse array of specialized types, or to one or a few...

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Artificial selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 22043 words.

Artificial selection provides a means of validating evolutionary principles, and is the basis of applied evolutionary biology. This chapter describes both short-term and long-term responses...

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Autoselection: selfish genetic elements

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 12591 words.

Genetic elements that spread by parasitizing the replicative machinery of a host cell are common inhabitants of the genome, especially in multicellular sexual organisms. They show how...

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Co-evolution

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 22708 words.

Members of a different species may be enemies, such as predators and parasites, or friends, such as mutualists. The linked evolutionary dynamics of strongly interacting species can be...

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Epitome

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 4772 words.

This final chapter epitomizes some of the material presented in the bulk of the text under headings which reflect the introductory section by consisting of declaratory sentences. This...

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The genetic and ecological context of selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 20778 words.

This chapter gives some quantitative information about the rates of genetic and environmental deterioration. The first section in this chapter is about history, chance, and necessity, and...

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Natural selection in closed asexual populations

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 43316 words.

The mechanism of evolutionary change can be studied directly through selection experiments in laboratory microcosms. This chapter begins by describing the experimental approach to...

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Natural selection in open populations

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 25971 words.

Natural selection can be observed and measured in natural populations. This chapter argues that it is commonplace, strong, fluctuating, and oligogenic. The first section here is called...

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Prometheus Unbound: releasing the constraints on natural selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 20621 words.

The evolution of asexual organisms in laboratory microcosms is constrained by the lack of genetic exchange and by isolation from the rest of the world. When these constraints are relaxed,...

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Selection in multicellular organisms

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 14986 words.

The development of multicellular organisms involves a balance between somatic and reproductive tissues. This chapter outlines how the action of selection is influenced by the age at which...

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Sexual selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 28366 words.

There is good but not conclusive evidence that sex is indirectly selected because it facilitates adaptation, and in particular adaptation to coevolving antagonists. Competition for sexual...

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Simple selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 9425 words.

The action of selection is based on a few simple principles that are general to all self-replicating systems, and which constitute a distinct branch of science. This introductory chapter...

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Social selection

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 30666 words.

Selection is often generated by interaction with other organisms: neighbours, partners, or antagonists. The force and direction of selection in these social contexts is very generally...

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Speciation

Graham Bell.

in Selection

December 2007; p ublished online May 2008 .

Chapter. Subjects: Evolutionary Biology. 15257 words.

Diversification occurs readily in asexual populations, but is obstructed by recombination in outcrossed sexual organisms. Species may arise because sexual isolation permits diversification,...

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