Ag-NOR chromosomal association patterns in Rattus rattus (Rafinesque, 1814) and Rattus norvegicus (Berkenhout, 1796) from the southern Iberian peninsula.
A high frequency of satellite association phenomena in a number of specimens of Rattus rattus and R. norvegicus, captured on the coastal fringe of Málaga province (Southern Spain), was found. Only Ag-NOR bearing chromosomes participated in associations in both species. R. rattus is characterized by 14/18 heterologous and R. norvegicus by 5/5 and 13/13 homologous association types.
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D000818:Animals; D000835:Animals, Wild / Q000235:genetics; D002871:Chromosome Banding; D002875:Chromosomes / Q000032:analysis*; D005260:Female; D008297:Male; D008677:Metaphase; D009115:Muridae / Q000235:genetics*; D051381:Rats / Q000235:genetics*; D013030:Spain; D013045:Species Specificity; D013194:Staining and Labeling