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• W2621740289 abstract "Genetic Considerations in the Evolution of Sexual Dimorphism Minyoung Janet Wyman Doctor of Philosophy Graduate Department of Ecology & Evolutionary Biology University of Toronto 2012 Sexual differences are dramatic and widespread across taxa. However, a common genome between males and females should hinder phenotypic divergence. In this thesis I have used experimental, genomic, and theoretical approaches to study processes that can facilitate and maintain differences between males and females. I studied two mechanisms for the evolution of sexual dimorphism− condition-dependence and gene duplication. If sex-specific traits are costly, then individuals should only express such traits when they possess enough resources to do so. I experimentally manipulated adult condition and found that the sex-biased gene expression depends on condition. Second, duplication events can permit different gene copies to adopt sex-specific expression. I showed that half of all duplicate families have paralogs with different sex-biased expression patterns between members. I investigated how current sexual dimorphism may support novel dimorphism. With regards gene duplication, I found that related duplicates did not always have different expression patterns. However, duplicating a pre-existing sex-biased gene effectively increases organismal sexual dimorphism overall. From a theoretical perspective, I investigated how sexually dimorphic recombination rates allow novel sexually antagonistic variation to invade. Male and female recombination rates separately affect invasion probabilities of new alleles. ii Finally, I examined the assumption that a common genetic architecture impedes the evolution of sexual dimorphism. First, I conducted a literature review to test whether additive genetic variances in shared traits were different between the sexes. There were few significant statistical differences. However, extreme male-biased variances were more common than extreme female-biased variances. Sexual dimorphism is expected to evolve easily in such traits. Second, I compared these results to findings from the multivariate literature. In contrast to single trait studies, almost all multivariate studies of sexual dimorphism have found variance differences, both in magnitude and orientation, between males and females. Overall, this thesis concludes that sexual dimorphism can evolve by processes that generate novel sexual dimorphism or that take advantage of pre-existing dimorphism. Furthermore, a common genome is not necessarily a strong barrier if genetic variances differ between the sexes. It will be an exciting challenge to understand how mutation and selection work together to allow organisms differ in their ability evolve sexual dimorphism." @default.
• W2621740289 created "2017-06-15" @default.
• W2621740289 creator A5066976618 @default.
• W2621740289 date "2013-01-08" @default.
• W2621740289 modified "2023-09-27" @default.
• W2621740289 title "Genetic Considerations in the Evolution of Sexual Dimorphism" @default.
• W2621740289 cites W113569564 @default.
• W2621740289 cites W1483780645 @default.
• W2621740289 cites W1490421035 @default.
• W2621740289 cites W1493507906 @default.
• W2621740289 cites W1496544671 @default.
• W2621740289 cites W1497295571 @default.
• W2621740289 cites W1498211350 @default.
• W2621740289 cites W1502789653 @default.
• W2621740289 cites W1512993828 @default.
• W2621740289 cites W1521984650 @default.
• W2621740289 cites W1530382883 @default.
• W2621740289 cites W1565871553 @default.
• W2621740289 cites W1577093980 @default.
• W2621740289 cites W1577941315 @default.
• W2621740289 cites W1579799291 @default.
• W2621740289 cites W1581993271 @default.
• W2621740289 cites W1587923665 @default.
• W2621740289 cites W1590291211 @default.
• W2621740289 cites W1666119685 @default.
• W2621740289 cites W171753196 @default.
• W2621740289 cites W1771763 @default.
• W2621740289 cites W1792683119 @default.
• W2621740289 cites W1798083941 @default.
• W2621740289 cites W1826922928 @default.
• W2621740289 cites W1829665397 @default.
• W2621740289 cites W1854781644 @default.
• W2621740289 cites W1880468085 @default.
• W2621740289 cites W1894654840 @default.
• W2621740289 cites W1898634883 @default.
• W2621740289 cites W1923754397 @default.
• W2621740289 cites W1956659456 @default.
• W2621740289 cites W1963745248 @default.
• W2621740289 cites W1964116919 @default.
• W2621740289 cites W1964193453 @default.
• W2621740289 cites W1964895626 @default.
• W2621740289 cites W1967145491 @default.
• W2621740289 cites W1967331949 @default.
• W2621740289 cites W1967640677 @default.
• W2621740289 cites W1968651839 @default.
• W2621740289 cites W1969560146 @default.
• W2621740289 cites W1970000754 @default.
• W2621740289 cites W1972093258 @default.
• W2621740289 cites W1972948170 @default.
• W2621740289 cites W1973324373 @default.
• W2621740289 cites W1973425605 @default.
• W2621740289 cites W1974677017 @default.
• W2621740289 cites W1974969763 @default.
• W2621740289 cites W1980590282 @default.
• W2621740289 cites W1980829517 @default.
• W2621740289 cites W1981048891 @default.
• W2621740289 cites W1985595844 @default.
• W2621740289 cites W1985804748 @default.
• W2621740289 cites W1986126262 @default.
• W2621740289 cites W1987454233 @default.
• W2621740289 cites W1988053800 @default.
• W2621740289 cites W1988735259 @default.
• W2621740289 cites W1989665057 @default.
• W2621740289 cites W1990706119 @default.
• W2621740289 cites W1991990927 @default.
• W2621740289 cites W1992644912 @default.
• W2621740289 cites W1992979778 @default.
• W2621740289 cites W1993728741 @default.
• W2621740289 cites W1995048754 @default.
• W2621740289 cites W1996423252 @default.
• W2621740289 cites W1996541678 @default.
• W2621740289 cites W1998856570 @default.
• W2621740289 cites W2000351506 @default.
• W2621740289 cites W2000768217 @default.
• W2621740289 cites W2000962756 @default.
• W2621740289 cites W2001790417 @default.
• W2621740289 cites W2001801169 @default.
• W2621740289 cites W2002652493 @default.
• W2621740289 cites W2003649027 @default.
• W2621740289 cites W2004382887 @default.
• W2621740289 cites W2004778468 @default.
• W2621740289 cites W2004856144 @default.
• W2621740289 cites W2006134581 @default.
• W2621740289 cites W2006496229 @default.
• W2621740289 cites W2006937521 @default.
• W2621740289 cites W2008289758 @default.
• W2621740289 cites W2008646367 @default.
• W2621740289 cites W2011350963 @default.
• W2621740289 cites W2012840807 @default.
• W2621740289 cites W2013444425 @default.
• W2621740289 cites W2013787654 @default.
• W2621740289 cites W2016005141 @default.
• W2621740289 cites W2016549203 @default.
• W2621740289 cites W2018202068 @default.
• W2621740289 cites W2018345851 @default.
• W2621740289 cites W2019234246 @default.
• W2621740289 cites W2019591778 @default.
• W2621740289 cites W2019822290 @default.
• W2621740289 cites W2019889150 @default.
• W2621740289 cites W2020007582 @default.

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