Amplication of ribosomal cistrons in the heterochromatin of acheta.
D000818:Animals; D002466:Cell Nucleolus; D002499:Centrifugation, Density Gradient; D002875:Chromosomes; D004247:DNA / Q000302:isolation & purification; D004261:DNA Replication; D005111:Extrachromosomal Inheritance; D005260:Female; D006570:Heterochromatin; D007313:Insecta; D008297:Male; D009691:Nucleic Acid Denaturation; D010053:Ovary / Q000166:cytology; D010759:Phosphorus Isotopes; D012313:RNA / Q000302:isolation & purification; D012270:Ribosomes; D013737:Testis / Q000166:cytology
D006570:Heterochromatin; D010759:Phosphorus Isotopes; D012313:RNA; D004247:DNA