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Satellite DNA sequences in the red kangaroo (Macropus rufus)
Journal article   Peer reviewed

Satellite DNA sequences in the red kangaroo (Macropus rufus)

Abigail Elizur, E S Dennis and W J Peacock
Australian Journal of Biological Sciences, Vol.35(3), pp.313-325
1982
url
https://doi.org/10.1071/BI9820313View
Published Version

Abstract

Biological Sciences Red Kangaroo Macropus rufus DNA sequences
There is a complex pattern of satellite DNA sequences in M. rufus which are revealed by addition of Ag+ or dye (Hoechst 33258) to the DNA ink Cs2SO4 or CsCl equilibrium density gradients. Six satellite DNA fractions have been isolated; these have buoyant densities in neutral CsCl of 1.692, 1.704, 1.705, 1.707 (two), 1.710 and 1.712 g/ml compared with 1.696 g/ml for the main band DNA. Each satellite accounts for 1-3% of the DNA of the genome. The satellites are located in the centromeric heterochromatin of the chromosomes, in the nucleolar organizer region and in interstitial bands on some of the autosomes, each satellite having a unique distribution. Nucleic acid hybridization showed that six of the satellite sequences are also present in the genomes of the wallaroo and the red-necked wallaby, with sequence divergences of only 1-2% relative to the sequences in the red kangaroo.

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#15 Life on Land

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