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An Empirical Approach to Understanding the Relationship Between Recombination and Fitness

The persistence of sex is a recurrent conundrum in evolutionary biology because
sex is costly. These costs may be accounted for by looking at the outcome of sex, namely
that sex causes genetic mixing. Recombination is one of the processes by which sex causes genetic mixing; determining when recombination is advantageous may alleviate some of the costs of sex. The advantages of recombination are in the effects of recombination and the influences thereupon. The first experiment focuses on the effects of recombination on the mean fitness and variance in fitness. A second experiment examines the influences on
recombination by addressing whether recombination is a general response to poor
condition. Specifically, the impact on recombination rate of genotypes with variable fitness is investigated. Differing fitness effects are not correlated to recombination rates. Conversely, coincidence, a recombination related trait, is positively correlated with fitness.

Identiferoai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/17230
Date26 February 2009
CreatorsTedman-Aucoin, Katherine
ContributorsAgrawal, Aneil
Source SetsUniversity of Toronto
Languageen_ca
Detected LanguageEnglish
TypeThesis
Format1136655 bytes, application/pdf

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