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The Major Transitions in Evolution Revisited$
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Brett Calcott and Kim Sterelny

Print publication date: 2011

Print ISBN-13: 9780262015240

Published to MIT Press Scholarship Online: August 2013

DOI: 10.7551/mitpress/9780262015240.001.0001

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Evolutionary Transitions in Individuality: Multicellularity and Sex

Evolutionary Transitions in Individuality: Multicellularity and Sex

Chapter:
(p.169) 9 Evolutionary Transitions in Individuality: Multicellularity and Sex
Source:
The Major Transitions in Evolution Revisited
Author(s):

Richard E. Michod

Publisher:
The MIT Press
DOI:10.7551/mitpress/9780262015240.003.0010

This chapter combines formal models of how the fitness of a collective can become decoupled from the fitness with more empirical work on the volvocine algae. It uses the Volvox clade as a model system. It describes the evolution of altruism in the volvocine green algae. This chapter suggests that altruism may evolve from genes involved in life-history trade-offs. It shows the several cooperation, conflict, and conflict mediation cycles in the volvocine green algae. This cycle of cooperation, conflict, and conflict mediation drives evolutionary transitions in individuality.

Keywords:   volvocine algae, Volvox clade, model system, altruism, evolution, cooperation, conflict, conflict mediation, individuality

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