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dc.contributor.authorSilva, Catarina
dc.contributor.authorMcFarlane, S. Eryn
dc.contributor.authorHagen, Ingerid Julie
dc.contributor.authorRönnegård, Lars
dc.contributor.authorBilling, Anna
dc.contributor.authorKvalnes, Thomas
dc.contributor.authorKemppainen, Petri
dc.contributor.authorRønning, Bernt
dc.contributor.authorRingsby, Thor Harald
dc.contributor.authorSæther, Bernt-Erik
dc.contributor.authorQvarnström, Anna
dc.contributor.authorEllegren, Hans
dc.contributor.authorJensen, Henrik
dc.contributor.authorHusby, Arild
dc.date.accessioned2017-11-01T07:23:24Z
dc.date.available2017-11-01T07:23:24Z
dc.date.created2017-05-23T10:06:55Z
dc.date.issued2017
dc.identifier.issn0018-067X
dc.identifier.urihttp://hdl.handle.net/11250/2463307
dc.description.abstractKnowledge about the underlying genetic architecture of phenotypic traits is needed to understand and predict their evolutionary dynamics. The number of causal loci underlying most phenotypic traits, the magnitude of their effects and their location in the genome is still largely unknown. Here we use genome-wide SNP data from two large-scale datasets on house sparrows and collared flycatchers to examine the genetic architecture of morphological (tarsus length, wing length, body mass, bill depth and bill length) and sexually selected traits (total badge size and visible badge size in house sparrows and white wing patches in collared flycatchers). Heritabilities were estimated using kinship coefficients calculated from the SNP data. The proportion of variance captured by the SNPs (SNP-based heritability) was lower in house sparrows compared to collared flycatchers, as expected given marker density (6,348 SNPs in house sparrows versus 38,689 SNPs in collared flycatchers). Chromosome partitioning analyses demonstrated that the proportion of variance explained by each chromosome was significantly positively related to the chromosome size for most traits. Finally, we only found two genome-wide significant associations with very small effect sizes; one SNP on chromosome 20 associated with bill length in house sparrows and one SNP on chromosome 4 for tarsus length in collared flycatchers. Although we cannot exclude the possibility of undetected large-effect QTL, our results support the hypothesis that variation in morphological and sexually selected traits is typically determined by many loci with small effect.nb_NO
dc.language.isoengnb_NO
dc.publisherNature Publishing Group for Genetics Societynb_NO
dc.titleInsights into the genetic architecture of morphological and sexually selected traits in two passerine bird speciesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.journalHereditynb_NO
dc.identifier.doi10.1038/hdy.2017.29
dc.identifier.cristin1471524
dc.relation.projectNorges forskningsråd: 214553nb_NO
dc.relation.projectNorges forskningsråd: 221956nb_NO
dc.relation.projectNorges forskningsråd: 204303nb_NO
dc.relation.projectNorges forskningsråd: 191847nb_NO
dc.relation.projectNorges forskningsråd: 223257nb_NO
dc.description.localcode© 2017. This is the authors’ accepted and refereed manuscript to the article. Locked until 14.12.2017 due to copyright restrictions.nb_NO
cristin.unitcode194,66,10,0
cristin.unitcode194,31,10,0
cristin.unitnameInstitutt for biologi
cristin.unitnameInstitutt for naturhistorie
cristin.ispublishedfalse
cristin.fulltextoriginal
cristin.qualitycode1


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