Comparative FISH analysis in five species of Eyprepocnemidine grasshoppers

Article Abstract:

Research has been conducted on Eyprepocnemidinae grasshoppers from Russia and Central Asia. The Authors demonstrate that chromosomal localization of ribosomal DNA and satellite DNA isoalted from Spanish grasshoppers have been analyzed in Russian and Central Asian species in order to understand the evolution of the chromosome markers in this group of grasshoppers, and they discuss the results.

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Ribosomal genes in Coregonid fishes (Coregonus lavaretus, C. albula and C. peled)(Salmonidae): single and multiple nucleolus organizer regions

Article Abstract:

Single and multiple nucleolus organizer regions in ribosomal genes have been studied in three closely related coregonine salmonid fishes, the vendace, European whitefish, and the peled. All positive Ag-NORs found corresponded to rDNA-ISH- and DMA(sub.3)-positive signals. This result suggests extensive structural polymorphism in locations of rDNA sites.

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Ribosomal DNA evolution and gene conversion in Nicotiana rustica

Article Abstract:

The authors have investigated Nicotiana rustica. The authors describe the use of genomic in situ hybridization in confirming that N. rustica is an allotetraploid between N. paniculata and N. undulata.

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