Chromosome Mapping of Repetitive Sequences in Rachycentron canadum (Perciformes: Rachycentridae): Implications for Karyotypic Evolution and Perspectives for Biotechnological Uses
Figure 1
Karyotypes of Rachycentron canadum. Conventional staining (a) highlighting the Ag-NOR sites in chromosome 2; (b) C-banding, highlighting the NORs as CMA3+/DAPI− heterochromatic regions; (c) replication bands, showing 18S (pair 2) and 5S (pairs 3 and 13) rDNA sites with early replication; (d) double-FISH with 18S (pink) and 5S (green) rDNA probes, showing the location of 18S rDNA sites in pair 2 and of 5S rDNA sites in pairs 3 and 13; (e) FISH with (TTAGGG)n sequences showing the location of telomeric sites in the chromosomes (orange). Bar = 5 μm.
