Characterizing the evolution of genetic variance using genetic covariance tensors
| العنوان: | Characterizing the evolution of genetic variance using genetic covariance tensors |
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| المؤلفون: | Stephen F. Chenoweth, Emma Hine, Mark W. Blows, Howard D. Rundle |
| المصدر: | Philosophical Transactions of the Royal Society B: Biological Sciences. 364:1567-1578 |
| بيانات النشر: | The Royal Society, 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | Male, Analysis of Variance, Genetic diversity, Models, Genetic, Genetic Variation, Biology, Genetic correlation, General Biochemistry, Genetics and Molecular Biology, Divergence, Evolution, Molecular, Genetics, Population, Genetic drift, Genetic distance, Evolutionary biology, Genetic variation, Animals, Drosophila, Genetic variability, Selection, Genetic, General Agricultural and Biological Sciences, Selection (genetic algorithm), Research Article |
| الوصف: | Determining how genetic variance changes under selection in natural populations has proved to be a very resilient problem in evolutionary genetics. In the same way that understanding the availability of genetic variance within populations requires the simultaneous consideration of genetic variance in sets of functionally related traits, determining how genetic variance changes under selection in natural populations will require ascertaining how genetic variance–covariance (G) matrices evolve. Here, we develop a geometric framework using higher-order tensors, which enables the empirical characterization of howGmatrices have diverged among populations. We then show how divergence among populations in genetic covariance structure can then be associated with divergence in selection acting on those traits using key equations from evolutionary theory. Using estimates ofGmatrices of eight male sexually selected traits from nine geographical populations ofDrosophila serrata, we show that much of the divergence in genetic variance occurred in a single trait combination, a conclusion that could not have been reached by examining variation among the individual elements of the nineGmatrices. Divergence inGwas primarily in the direction of the major axes of genetic variance within populations, suggesting that genetic drift may be a major cause of divergence in genetic variance among these populations. |
| تدمد: | 1471-2970 0962-8436 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a2ea443107eb05dafe06ebb6ca24f94c https://doi.org/10.1098/rstb.2008.0313 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....a2ea443107eb05dafe06ebb6ca24f94c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14712970 09628436 |
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