English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/113668
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Strong artificial selection in domestic mammals did not result in an increased recombination rate

AuthorsMuñoz-Fuentes, Violeta ; Marcet-Ortega, Marina; Alkorta-Aranburu, Gorka; Linde Forsberg, Catharina; Morrell, Jane M.; Manzano-Piedras, Esperanza; Södeberg, Arne; Daniel, Katrin; Villalba, Adrian; Toth, Attila; Di Rienzo, Anna; Roig, Ignasi; Vilà, Carles
KeywordsCanis
Capra
Immunolocalization
MLH1
Ovis
Genomics
Spermatocytes
Issue Date2015
PublisherOxford University Press
CitationMolecular Biology and Evolution, 32(2):510-523 (2015)
AbstractRecombination rates vary in intensity and location at the species, individual, sex and chromosome levels. Despite the fundamental biological importance of this process, the selective forces that operate to shape recombination rate and patterns are unclear. Domestication offers a unique opportunity to study the interplay between recombination and selection, particularly due to Hill-Robertson interference, which should be important when many linked loci are repeatedly the target of selection. In domesticates, intense selection for particular traits is imposed on small populations over many generations, resulting in organisms that differ, sometimes dramatically, in morphology and physiology from their wild ancestor. Although earlier studies suggested increased recombination rate in domesticates, a formal comparison of recombination rates between domestic mammals and their wild congeners was missing. In order to determine broad-scale recombination rate, we used immunolabeling detection of MLH1 foci as crossover markers in spermatocytes in three pairs of closely related wild and domestic species (dog and wolf, goat and ibex, sheep and mouflon). In the three pairs, and contrary to previous suggestions, our data show that contemporary recombination rate is higher in the wild species. Subsequently, we inferred recombination breakpoints in sequence data for 16 genomic regions in dogs and wolves, each containing a locus associated with a dog phenotype potentially under selection during domestication. No difference in the number and distribution of recombination breakpoints was found between dogs and wolves. We conclude that our data indicate that strong directional selection did not result in changes in recombination in domestic mammals, and that both upper and lower bounds for crossover rates may be tightly regulated
Publisher version (URL)http;//dx.doi.org/10.1093/molbev/msu322
URIhttp://hdl.handle.net/10261/113668
DOI10.1093/molbev/msu322
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
Mol Biol Evol-2014-Muñoz-Fuentes-molbev-msu322.pdfTexto3,56 MBAdobe PDFThumbnail
View/Open
Violeta supp.pdfSuppl.45,51 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.