JOURNAL OF
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Journal of Applied Genetics 42(1), 2001, pp. 59-64

Comparison between the G-banded karyotype of the aoudad (Ammotragus lervia) and sheep (Ovis aries)

Ewa SLOTA, Anna KOZUBSKA-SOBOCINSKA, Monika BUGNO, Agnieszka GIEMZA-MAREK, Bernadetta KULIG


Abstract: Karyotypes of the aoudad and sheep were compared on the basis of G-banded chromosomes at the 450 band level. The common G-banded karyotype showed the homology of all aoudad chromosomes (2n=58) with sheep chromosomes (2n=54) or sheep chromosome arms. The results of cytogenetic investigations suggest that in this case karyotype evolution has led to reduction in chromosome number as a result of centric fusions. The formation of the first metacentric chromosome occurred in the aoudad. The homology of the G-banding pattern in sheep and aoudad suggests the conservation in linear arrangement of genetic material. Thus comparative cytogenetics can be a useful tool in gene mapping.

Key words: aoudad, comparative cytogenetics, G-banding, karyotype, sheep.

Correspondence: E. Slota, Department of Immuno and Cytogenetics, National Research Institute of Animal Production, 32-083 Balice/Krakow, Poland, e-mail: eslota@izo.krakow.pl.