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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

  1. Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, 3083, Australia

    A. A. De Leo, N. Guedelha & J. A. M. Graves

  2. Institute of Human Genetics and Anthropology, University of Freiburg, Breisacher Strasse 33, D-79106, Freiburg, Germany

    R. Toder

  3. Murdoch Institute, Royal Children's Hospital, Melbourne, VIC, 3052, Australia

    L. Voullaire

  4. Department of Pathology, Cambridge University, Cambridge, UK

    M. A. Ferguson-Smith & P. C. M. O'Brien

Authors

  1. A. A. De Leo

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  2. N. Guedelha

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  3. R. Toder

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  4. L. Voullaire

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  5. M. A. Ferguson-Smith

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  6. P. C. M. O'Brien

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  7. 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

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  • Issue Date: December 1999

  • DOI: https://doi.org/10.1023/A:1009233327176