Comparative Chromosome Painting Between Marsupial Orders: Relationships with a 2n = 14 Ancestral Marsupial Karyotype - Chromosome Research
- ️Graves, J. A. M.
- ️Wed Dec 01 1999
Abstract
A 2n = 14 karyotype is shared by some species in each of the marsupial orders in Australian and American superfamilies, suggesting that the ancestral marsupial chromosome complement was 2n = 14. We have used chromosome painting between distantly related marsupial species to discover whether genome arrangements in 2n = 14 species in two Australian orders support this hypothesis. Cross-species chromosome painting was used to investigate chromosome rearrangements between a macropodid species Macropus eugenii (2n = 16) and a wombat species in a different suborder (Lasiorhinus latifrons, 2n = 14), and a dasyurid species in a different order (Sminthopsis macroura, 2n = 14). We demonstrate that many chromosome regions are conserved between all three species, and deduce how the similar 2n = 14 karyotypes of species in the two orders are related to a common ancestral 2n = 14 karyotype.
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Authors and Affiliations
Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, 3083, Australia
A. A. De Leo, N. Guedelha & J. A. M. Graves
Institute of Human Genetics and Anthropology, University of Freiburg, Breisacher Strasse 33, D-79106, Freiburg, Germany
R. Toder
Murdoch Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia
L. Voullaire
Department of Pathology, Cambridge University, Cambridge, UK
M. A. Ferguson-Smith & P. C. M. O'Brien
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- A. A. De Leo
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- N. Guedelha
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- R. Toder
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- L. Voullaire
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- M. A. Ferguson-Smith
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- P. C. M. O'Brien
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- J. A. M. Graves
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De Leo, A.A., Guedelha, N., Toder, R. et al. Comparative Chromosome Painting Between Marsupial Orders: Relationships with a 2n = 14 Ancestral Marsupial Karyotype. Chromosome Res 7, 509–517 (1999). https://doi.org/10.1023/A:1009233327176
Issue Date: December 1999
DOI: https://doi.org/10.1023/A:1009233327176