Comparative chromosome painting of chicken autosomal paints 1–9 in nine different bird speciesGuttenbach M.a · Nanda I.a · Feichtinger W.a · Masabanda J.S.b · Griffin D.K.b · Schmid M.a
aDepartment of Human Genetics, University of Würzburg, Würzburg (Germany); bDepartment of Biological Sciences, Brunel University, Uxbridge (UK)
In a Zoo-FISH study chicken autosomal chromosome paints 1 to 9 (GGA1–GGA9) were hybridized to metaphase spreads of nine diverse birds belonging to primitive and modern orders. This comparative approach allows tracing of chromosomal rearrangements that occurred during bird evolution. Striking homologies in the chromosomes of the different species were noted, indicating a high degree of evolutionary conservation in avian karyotypes. In two species, the quail and the goose, all chicken paints specifically labeled their corresponding chromosomes. In three pheasant species as well as in the American rhea and blackbird, GGA4 hybridized to chromosome 4 and additionally to a single pair of microchromosomes. Furthermore, in the pheasants fission of the ancestral galliform chromosome 2 could be documented. Hybridization of various chicken probes to two different chromosomes or to only the short or long chromosome arm of one chromosome pair in the species representing the orders Passeriformes, Strigiformes, and Columbiformes revealed translocations and chromosome fissions during species radiation. Thus comparative analysis with chicken chromosome-specific painting probes proves to be a rapid and comprehensive approach to elucidate the chromosomal relationships of the extant birds.
© 2003 S. Karger AG, Basel
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Supported by a grant from the Commission of the European communities (BIO4-CT97-0288, AVIANOME) and by the Deutsche Forschungsgemeinschaft DFG, grant SCHM 484/21-1.
Received 24 September 2003;
manuscript accepted 23 October 2003.
Number of Print Pages : 12
Number of Figures : 12, Number of Tables : 1, Number of References : 26
Cytogenetic and Genome Research
Formerly ‘Cytogenetics and Cell Genetics’
Vol. 103, No. 1-2, Year 2003 (Cover Date: 2003)
Journal Editor: H.P. Klinger, Bronx, N.Y.; M. Schmid, Würzburg
ISSN: 1424–8581 (print), 1424–859X (Online)
For additional information: http://www.karger.com/journals/cgr