nucleolus organizer การใช้

• B " ) differs from both " M . mystacinus " and " M . brandtii " in the pattern of active nucleolus organizer regions on the chromosomes.
• Ribosomal DNA transcription is confined to the nucleolus, where about 400 copies of the 42.9-kb rDNA gene are present, arranged as tandem repeats in nucleolus organizer regions.
• Nucleolus organizer regions ( NORs ) are head-to-tail arrays of genes encoding the precursor of the three largest ribosomal RNAs ( 18S, 5.8S and 25S in plants ).
• Although the banding patterns on the chromosomes of all slow lorises are similar, this species may be distinguished from the Bengal slow loris ( " N . bengalensis " ) by distinct differences in the number and location of nucleolus organizer regions.