Chapter

Evolution of Lifelong Heterogeneity

Laurence D. Muller

in Does Aging Stop?

Published in print July 2011 | ISBN: 9780199754229
Published online September 2011 | e-ISBN: 9780199896714 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199754229.003.0007
Evolution of Lifelong Heterogeneity

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It is unlikely that lifelong heterogeneity in robustness will be extreme, if it occurs at all. Natural selection will favor genotypes with much greater robustness, reducing the genetic variance for robustness over time. Natural selection will also favor genotypes that reduce the amount of developmental or environmental variation in robustness. Stable genetic equilibria with sufficient levels of lifelong heterogeneity to cause mortality plateaus seem unlikely.

Keywords: heterogeneity; mortality plateaus; natural selection; genetic equilibria

Chapter.  1786 words.  Illustrated.

Subjects: Evolutionary Biology

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