Journal
CYTOGENETIC AND GENOME RESEARCH
Volume 98, Issue 4, Pages 278-284Publisher
KARGER
DOI: 10.1159/000071049
Keywords
-
Categories
Ask authors/readers for more resources
The C-band pattern and the distribution of the (TTAGGG)(n) sequence after fluorescence in situ hybridization (FISH), were studied in eight species of Didelphidae marsupials: four species with 2n = 14 (Marmosops parvidens, Marmosops incanus, Marmosa murina and Metachirus nudicaudatus), two species with 2n = 18 (Monodelphis domestica and M. americana), and two with 2n = 22 (Didelphis marsupialis and Lutreolina crassicaudata). The hybridization signals were observed at both termini telomeres of all chromosomes. In addition, interstitial sequences were detected in the pericentromeric region of all chromosomes of Marmosops parvidens, in five chromosome pairs of M. incanus, and in the first pair of Monodelphis domestica. These sites always occur in the region of constitutive heterochromatin, even though C-band positive regions do not always present interstitial telomeric sequences (ITS). We suggest that the interstitial (TTAGGG)n sequences are associated with satellite DNA and do not necessarily arise through chromosomal rearrangements. Copyright (C) 2002 S. Karger AG, Basel.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available