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    Contribution of chromosomal polymorphisms to the G-matrix of Mimulus guttatus

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    Scoville_2009.pdf (538.4Kb)
    Issue Date
    2009-07-17
    Author
    Scoville, Alison G.
    Wha Lee, Young
    Willis, John H.
    Kelly, John K.
    Publisher
    Wiley
    Type
    Article
    Article Version
    Scholarly/refereed, author accepted manuscript
    Metadata
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    Abstract
    Evolution of genetic (co)variances (the G-matrix) fundamentally influences multitrait divergence. Here, we isolated the contribution of two chromosomal quantitative trait loci (QTLs), a meiotic drive locus and a polymorphic inversion, to the overall G-matrix for a suite of floral, phenological and male fitness traits in a population of Mimulus guttatus. This allowed us to predict the evolution of trait means and genetic (co)variances as a function of allele frequencies, and to evaluate theories about the maintenance of genetic variation in fitness. Individuals generated using a replicated F2 breeding design were grown under common conditions, genotyped and measured for trait values. Significant additive genetic variance existed for all traits, and most genetic covariances were significantly nonzero. Both QTLs contribute to the additive genetic (co)variances of multiple traits. Pleiotropy was not generally consistent, either between QTLs or with the genetic background. Shifts in allele frequencies at either QTL are predicted to result in substantial changes in the G-matrix. Both QTLs contribute substantially to the genetic variation in pollen viability. The Drive QTL, and perhaps also the inversion, demonstrates the contribution of balancing selection to the maintenance of genetic variation in fitness.
    Description
    This is the peer reviewed version of the following article: Scoville, A., Lee, Y. W., Willis, J. H., & Kelly, J. K. (2009). Contribution of chromosomal polymorphisms to the G-matrix of Mimulus guttatus. The New Phytologist, 183(3), 803–815. http://doi.org/10.1111/j.1469-8137.2009.02947.x, which has been published in final form at http://doi.org/10.1111/j.1469-8137.2009.02947.x. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
    URI
    http://hdl.handle.net/1808/26490
    DOI
    https://doi.org/10.1111/j.1469-8137.2009.02947.x
    Collections
    • Ecology & Evolutionary Biology Scholarly Works [1497]
    Citation
    Scoville, A., Lee, Y. W., Willis, J. H., & Kelly, J. K. (2009). Contribution of chromosomal polymorphisms to the G-matrix of Mimulus guttatus. The New Phytologist, 183(3), 803–815. http://doi.org/10.1111/j.1469-8137.2009.02947.x

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    KU Libraries
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    785-864-8983

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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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