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| Content Provider | PubMed Central |
|---|---|
| Author | Srikulnath, Kornsorn Uno, Yoshinobu Matsubara, Kazumi Amara, Thongpan Suputtitada, Saowanee Apisitwanich, Somsak Nishida, Chizuko Matsuda, Yoichi |
| Copyright Year | 2011 |
| Abstract | Chromosomal mapping of the butterfly lizards Leiolepis belliana belliana and L. boehmei was done using the 18S-28S and 5S rRNA genes and telomeric (TTAGGG)n sequences. The karyotype of L. b. belliana was 2n = 36, whereas that of L. boehmei was 2n = 34. The 18S-28S rRNA genes were located at the secondary constriction of the long arm of chromosome 1, while the 5S rRNA genes were found in the pericentromeric region of chromosome 6 in both species. Hybridization signals for the (TTAGGG)n sequence were observed at the telomeric ends of all chromosomes, as well as interstitially at the same position as the 18S-28S rRNA genes in L. boehmei. This finding suggests that in L. boehmei telomere-to-telomere fusion probably occurred between chromosome 1 and a microchromosome where the 18S-28S rRNA genes were located or, alternatively, at the secondary constriction of chromosome 1. The absence of telomeric sequence signals in chromosome 1 of L. b. belliana suggested that its chromosomes may have only a few copies of the (TTAGGG)n sequence or that there may have been a gradual loss of the repeat sequences during chromosomal evolution. |
| Related Links | http://dx.doi.org/10.1590/s1415-47572011005000042 |
| Ending Page | 586 |
| Page Count | 4 |
| Starting Page | 583 |
| File Format | |
| ISSN | 14154757 |
| e-ISSN | 16784685 |
| Journal | Genetics and Molecular Biology |
| Issue Number | 4 |
| Volume Number | 34 |
| Language | English |
| Publisher | Sociedade Brasileira de Genética |
| Publisher Date | 2011-01-01 |
| Access Restriction | Open |
| Rights Holder | Sociedade Brasileira de Genética |
| Subject Keyword | Genetics Molecular Biology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Molecular Biology |
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