PMID: 15381858Sep 24, 2004Paper

Sexual selection, redundancy and survival of the most beautiful

Journal of Biosciences
R D Morris, J A Morris

Abstract

A model is described of a highly redundant complex organism that has overlapping banks of genes such that each vital function is specified by several different genetic systems. This generates a synergistic profile linking probability of survival to the number of deleterious mutations in the genome. Computer models show that there is a dynamic interaction between the mean number of new deleterious mutations per generation (X), the mean number of deleterious mutations in the genome of the population (Y) and percentage zygote survival (Zs). Increased X leads to increased Y and a fall in Zs but it takes several generations before a new equilibrium is reached. If sexual attraction is influenced by the number of deleterious mutations in the genome of individuals then Y is reduced and Zs increased for any given value of X. This fall in Y and rise in Zs is more marked in polygamous than monogamous mating systems. The model is specified such that deleterious mutations can occur without any observable or measurable effect on function. Thus sexual selection, in this organism, for low levels of deleterious mutations cannot be based on assessment of performance. Instead it is based on a simple symmetrical surface pattern that is flawlessly ...Continue Reading

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Jun 7, 2018·PloS One·Michael K ScullinMadison L Krueger
Mar 6, 2010·Canadian Journal on Aging = La Revue Canadienne Du Vieillissement·Karen M Kobayashi, Laura Funk
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