Chromosomal distribution of the As51 satellite DNA in two species complexes of the genus Astyanax (Pisces, Characidae)

被引：26

作者：

dos Santos Abel, Luciano Douglas ^{[1
]}

Mantovani, Monique ^{[1
]}

Moreira-Filho, Orlando ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil

来源：

GENETICS AND MOLECULAR BIOLOGY | 2006年 / 29卷 / 03期

关键词：

As51; Astyanax scabripinnis; Astyanax fasciatus; fluorescence in situ hybridization (FISH); C-banding; satellite DNA;

D O I：

10.1590/S1415-47572006000300008

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The chromosomal localization of the As51 satellite DNA was identified by fluorescent in situ hybridization (FISH) in specimens of the characid fish Astyanax scabripinnis and Astyanax fasciatus, which are considered species complexes because of their extensive karyotypical and morphological variability. A conserved chromosomal distribution of the As51 satellite, coincident with distal C-banded segments was demonstrated. The alternative interstitial localization of this satellite DNA and possible alterations of its structure suggest that this sequence underwent quantitative, positional and structural variations, as the A. scabripinnis and A. fasciatus complexes diverged.

引用

页码：448 / 452

页数：5

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