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Original Article

A comparison of synteny and gene order on the homologue of chicken chromosome 7 between two passerine species and between passerines and chicken

Hale M.C.a · Jensen H.b · Birkhead T.R.a · Burke T.a · Slate J.a

Author affiliations

aDepartment of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield (UK) bPopulation Biology Center, Department of Biology, Realfagbygget, Norwegian University of Science and Technology, Trondheim (Norway)

Related Articles for ""

Cytogenet Genome Res 121:120–129 (2008)

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Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: January 18, 2008
Published online: June 09, 2008
Issue release date: June 2008

Number of Print Pages: 10
Number of Figures: 5
Number of Tables: 4

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR

Abstract

Wild populations of passerine birds have frequently been used in studies of ecology and evolution. However, the majority of species lack genetic linkage maps. The completion of a model avian genome sequence (the jungle fowl, Gallus gallus) has created an opportunity to advance genetic knowledge of other birds. Here we constructed genetic linkage maps of the homologue of chicken chromosome 7 for two passerine species, the zebra finch (Taeniopygia guttata) and the house sparrow (Passer domesticus). Linkage groups were constructed with a combination of SNP and microsatellite markers that were developed both in silico based on similarity to the chicken genome sequence, and de novo in the laboratory. Synteny was well conserved throughout the chromosome; however there were some gene rearrangements between chickens and passerines. This suggests that the transfer of map information from chicken to passerine and between different passerine species should not assume conserved gene order. The length of linkage maps of chromosome 7 were on average 60% that of chicken, consistent with the idea that passerines have a reduced recombination rate relative to chicken. Some evidence of heterochiasmy, i.e. a difference in the recombination rate between the sexes, was observed.

© 2008 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Article

Accepted: January 18, 2008
Published online: June 09, 2008
Issue release date: June 2008

Number of Print Pages: 10
Number of Figures: 5
Number of Tables: 4

ISSN: 1424-8581 (Print)
eISSN: 1424-859X (Online)

For additional information: http://www.karger.com/CGR


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