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Linkage mapping reveals sex-dimorphic map distances in a passerine bird

Hansson, B., Åkesson, M., Slate, J. and Pemberton, J.M. (2005) Linkage mapping reveals sex-dimorphic map distances in a passerine bird. Proceedings of the Royal Society B: Biological Sciences, 272 (1578). pp. 2289-2298. ISSN 1471-2954


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Linkage maps are lacking for many highly influential model organisms in evolutionary research, including all passerine birds. Consequently, their full potential as research models is severely hampered. Here, we provide a partial linkage map and give novel estimates of sex-specific recombination rates in a passerine bird, the great reed warbler (Acrocephalus arundinaceus). Linkage analysis of genotypic data at 51 autosomal microsatellites and seven markers on the Z-chromosome (one of the sex chromosomes) from an extended pedigree resulted in 12 linkage groups with 2–8 loci. A striking feature of the map was the pronounced sex-dimorphism: males had a substantially lower recombination rate than females, which resulted in a suppressed autosomal map in males (sum of linkage groups: 110.2cM) compared to females (237.2cM; female/male map ratio: 2.15). The sex-specific recombination rates will facilitate the building of a denser linkage map and cast light on hypotheses about sex-specific recombination rates.

Item Type: Article
Copyright, Publisher and Additional Information: © 2005 The Royal Society
Keywords: genetic map, linkage, recombination, heterochiasmy, bird, microsatellite
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Biological Sciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield)
Depositing User: Repository Officer
Date Deposited: 19 Jun 2006
Last Modified: 06 Jun 2014 19:48
Published Version: http://www.journals.royalsoc.ac.uk/openurl.asp?gen...
Status: Published
Publisher: The Royal Society
Refereed: Yes
Identification Number: 10.1098/rspb.2005.3228
URI: http://eprints.whiterose.ac.uk/id/eprint/1316

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