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SelectionThe Mechanism of Evolution$
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Graham Bell

Print publication date: 2007

Print ISBN-13: 9780198569725

Published to Oxford Scholarship Online: May 2008

DOI: 10.1093/acprof:oso/9780198569725.001.0001

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Selection in multicellular organisms

Selection in multicellular organisms

(p.162) CHAPTER 5 Selection in multicellular organisms

Graham Bell

Oxford University Press

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 structures and behaviours are expressed. This chapter's first section is called Reproductive allocation and it explains all about the correlated response to selection; antagonism of fitness components; the evolution of genetic correlation; and the optimal allocation. The second section, entitled Life histories, details selection in age-structured populations; depreciation of later reproduction; artificial selection for early reproduction; senescence; soma and germ; the nature of senescence; the evolution of senescence; selection for delayed senescence in Drosophila; endogenous evolution; and the disposable soma.

Keywords:   life history, cost of reproduction, senescence, fitness components, survival, fecundity, disposable soma

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