| Autor: |
De Leo AA; Department of Biochemistry and Genetics, La Trobe University, Bundoora, VIC, Australia., Guedelha N, Toder R, Voullaire L, Ferguson-Smith MA, O'Brien PC, Graves JA |
| Jazyk: |
angličtina |
| Zdroj: |
Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology [Chromosome Res] 1999; Vol. 7 (7), pp. 509-17. |
| DOI: |
10.1023/a:1009233327176 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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