Abstract
The Indian muntjac (Muntiacus muntjak vaginalis) has a karyotype of 2n = 6 in the female and 2n = 7 in the male. The karyotypic evolution of Indian muntjac via extensive tandem fusions and several centric fusions are well documented by molecular cytogenetic studies mainly utilizing chromosome paints. To achieve higher resolution mapping, a set of 42 different genomic clones coding for 37 genes and the nucleolar organizer region were used to examine homologies between the cattle (2n = 60), human (2n = 46), Indian muntjac (2n = 6/7) and Chinese muntjac (2n = 46) karyotypes. These genomic clones were mapped by fluorescence in situ hybridization (FISH). Localization of genes on all three pairs of M. m. vaginalis chromosomes and on the acrocentric chromosomes of M. reevesi allowed not only the analysis of the evolution of syntenic regions within the muntjac genus but also allowed a broader comparison of synteny with more distantly related species, such as cattle and human, to shed more light onto the evolving genome organization.
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Abbreviations
- BAC:
-
Bacterial artificial chromosome
- B. taurus :
-
Bos taurus
- FISH:
-
Fluorescence in situ hybridization
- M. m. vaginalis :
-
Muntiacus muntjak vaginalis
- M. reevesi :
-
Muntiacus reevesi
- NOR:
-
Nucleolar organizer region
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Acknowledgements
We thank Dr Jens Eilbracht, Deutsches Krebsforschungszentrum, Heidelberg, Germany, for providing the BT-18S mouse clone and Dr Stuart Schwartz, University of Chicago, for his critical reading.
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For convenience and to avoid confusion we added for each species a three letter abbreviation prior to the chromosomal band location discussed in this paper: BTA, Cattle chromosome; HSA, Human chromosome; MMV, M. m. vaginalis chromosome; MRE, M. reevesi chromosome.
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Murmann, A.E., Mincheva, A., Scheuermann, M.O. et al. Comparative gene mapping in cattle, Indian muntjac, and Chinese muntjac by fluorescence in situ hybridization. Genetica 134, 345–351 (2008). https://doi.org/10.1007/s10709-008-9242-1
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DOI: https://doi.org/10.1007/s10709-008-9242-1