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Not by DesignRetiring Darwin's Watchmaker$
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John Reiss

Print publication date: 2009

Print ISBN-13: 9780520258938

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520258938.001.0001

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Adaptedness, Natural Selection, and the Conditions for Existence

Adaptedness, Natural Selection, and the Conditions for Existence

Chapter:
(p.256) (p.257) 10 Adaptedness, Natural Selection, and the Conditions for Existence
Source:
Not by Design
Author(s):

John O. Reiss

Publisher:
University of California Press
DOI:10.1525/california/9780520258938.003.0010

This chapter discusses the meaning of adaptedness, and examines its relation both to natural selection and to the conditions for existence. Adaptedness means a certain appropriateness or fit between the various aspects of an organism's morphology, physiology, lifestyle, and environment. The chapter provides examples to explain how the adaptedness of a trait relates to its evolutionary history and how it relates to the process of adaptation. It also examines the experimental evolution of bacteria, peppered moths, and Darwin's finches, which shows that natural selection in evolution is a factor maintaining the adaptedness in the face of environmental change and associated changes in the mode of adaptedness.

Keywords:   adaptedness, natural selection, conditions for existence, adaptation, experimental evolution, bacteria, peppered moths, finches

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