caa a22 4500 477090168 CHVBK 20180405111514.0 cr unu---uuuuu 170330e19960801xx s 000 0 eng 10.1007/BF02257268 doi (NATIONALLICENCE)springer-10.1007/BF02257268 Cytogenetic and molecular analysis of the satellite DNA of the genus Ctenomys (Rodentia Octodontidae) from Uruguay [Elektronische Daten] [A. Novello, M. Cortinas, M. Suárez, H. Musto] The genus of subterranean rodentsCtenomys presents the widest range of variability in diploid number among mammals (from2n=10 to2n=70). In Uruguay, this variability is observed in karyotypes with2n=44, 50 or 58 and two geographically isolated populations with 70 chromosomes but different karyotypic structure. The last three populations were analyzed in the present study. They present a satellite DNA, which was isolated from genomic DNA afterAlul digestion.In situ hybridization showed that this satellite DNA is located in the centromeric region of a few chromosomes, coincident with Hoechst 33258 staining and C-banding patterns. A similar satellite DNA was detected in Argentinian species of this genus. We established that, in spite of differences in number of positive heterochromatic blocks per karyotype, the C value is the same in the three populations studied. The nature and possible evolutionary path of this repeated DNA is discussed. Rapid Science Publishers, 1996 Ctenomys nationallicence evolution nationallicence heterochromatin nationallicence rodents nationallicence satellite DNA nationallicence Novello A. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut Cortinas M. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut Suárez M. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut Musto H. Sección Bioqumica, Facultad de Ciencias, Montevideo, Uruguay aut Chromosome Research Kluwer Academic Publishers 4/5(1996-08-01), 335-339 0967-3849 4:5<335 1996 4 10577 https://doi.org/10.1007/BF02257268 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02257268 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Novello A. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Cortinas M. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Suárez M. Sección Genética Evolutiva, Facultad de Ciencias, T. Narvaja 1674, 11200, Montevideo, Uruguay aut NATIONALLICENCE 700 1- Musto H. Sección Bioqumica, Facultad de Ciencias, Montevideo, Uruguay aut NATIONALLICENCE 773 0- Chromosome Research Kluwer Academic Publishers 4/5(1996-08-01), 335-339 0967-3849 4:5<335 1996 4 10577 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer