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  • 1. Boberg, E.
    Jonsson, M.
    Maad, Johanne
    Department of Plant Ecology and Evolution, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden.
    Ågren, J.
    Nilsson, L. A.
    Pollinator shifts and the evolution of spur length in the moth-pollinated orchid Platanthera bifolia2014In: Annals of Botany, ISSN 0305-7364, E-ISSN 1095-8290, Vol. 113, no 2, p. 267-275Article in journal (Refereed)
  • 2. Husby, Arild
    et al.
    Kawakami, Takeshi
    Rönnegård, Lars
    Dalarna University, School of Technology and Business Studies, Statistics. SLU.
    Smeds, Linnéa
    Ellegren, Hans
    Qvarnström, Anna
    Genome-wide association mapping in a wild avian population identifies a link between genetic and phenotypic variation in a life-history trait2015In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 282, no 1806Article in journal (Refereed)
    Abstract [en]

    Understanding the genetic basis of traits involved in adaptation is a major challenge in evolutionary biology but remains poorly understood. Here, we use genome-wide association mapping using a custom 50 k single nucleotide polymorphism (SNP) array in a natural population of collared flycatchers to examine the genetic basis of clutch size, an important life-history trait in many animal species. We found evidence for an association on chromosome 18 where one SNP significant at the genome-wide level explained 3.9% of the phenotypic variance. We also detected two suggestive quantitative trait loci (QTLs) on chromosomes 9 and 26. Fitness differences among genotypes were generally weak and not significant, although there was some indication of a sex-by-genotype interaction for lifetime reproductive success at the suggestive QTL on chromosome 26. This implies that sexual antagonism may play a role in maintaining genetic variation at this QTL. Our findings provide candidate regions for a classic avian life-history trait that will be useful for future studies examining the molecular and cellular function of, as well as evolutionary mechanisms operating at, these loci.

  • 3.
    Johansson, Sverker
    Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Ämnesforskning.
    Sagan om hur livet kom till Jorden1996Other (Other (popular science, discussion, etc.))
  • 4.
    Johansson, Sverker
    Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Ämnesforskning.
    The Monkey Trail: On the Fossil Record of Non-Human Primates1999Report (Other (popular science, discussion, etc.))
  • 5.
    Johansson, Sverker
    Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Ämnesforskning.
    Är kreationismen vetenskapligt hållbar?1992In: Svensk Teologisk Kvartalsskrift, no 68, p. 19-28Article in journal (Refereed)
  • 6.
    Maad, Johanne
    Norwegian Univ Sci & Technol, Dept Biol, NO-7491 Trondheim, Norway.
    On the mechanism of floral shifts in speciation: gained pollination efficiency from tongue- to eye-attachment of pollinia in Platanthera (Orchidaceae)2004In: Biological Journal of the Linnean Society, ISSN 0024-4066, E-ISSN 1095-8312, Vol. 83, no 4, p. 481-495Article in journal (Refereed)
  • 7.
    Maad, Johanne
    Uppsala Univ, Evolutionary Biol Ctr, Dept Systemat Bot, Norbyvagen 18D, SE-75236 Uppsala, Sweden.
    Phenotypic selection in hawkmoth-pollinated Platanthera bifolia: Targets and fitness surfaces2000In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 54, no 1, p. 112-123Article in journal (Refereed)
  • 8.
    Maad, Johanne
    et al.
    Norwegian Univ Sci & Technol, Dept Biol, NO-7491 Trondheim, Norway.
    Alexandersson, R.
    Variable selection in Platanthera bifolia (Orchidaceae): phenotypic selection differed between sex functions in a drought year2004In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 17, no 3, p. 642-650Article in journal (Refereed)
1 - 8 of 8
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