Ribosomal RNA expression in a mammalian hybrid, the hinny.
The expression of nucleolus organizer region (NOR) activity in diploid cells was investigated in a model mammalian hybrid system, the hinny (female ass x male horse), by sequential Ag-NOR and chromomycin A3/distamycin A/DAPI (CDD) staining ion lectin-stimulated peripheral blood lymphocytes. In the majority of cases we found non-expression of the horse-derived NOR chromosomes in the hinny. However, in one case there was strong NOR expression on horse-derived chromosome no. 1.
Kopp
E
E
Institute for Animal Breeding and Genetics, Veterinary University, Vienna, Austria.
Mayr
B
B
Schleger
W
W
D000818:Animals; D002478:Cells, Cultured; D003433:Crosses, Genetic; D005260:Female; D006736:Horses / Q000235:genetics*; D006824:Hybridization, Genetic; D007621:Karyotyping; D008214:Lymphocytes / Q000166:cytology; D008297:Male; D012335:RNA, Ribosomal / Q000235:genetics*
D012335:RNA, Ribosomal