ISSN:
1573-6857
Schlagwort(e):
chromosomes
;
diplopoda
;
Enologus oxypygum
;
FISH
;
heterochromatin
;
invertebrate
;
rDNA
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract In the present study, somatic metaphase chromosomes of the millipede Enologus oxypygum (Diplopoda: Julida) were hybridized in situ with a sea urchin (Echinodermata) ribosomal probe (prRl4) in order to map major RNA genes (rDNA). Chromosomal preparations were also silver stained (Ag-NOR) to evaluate the rDNA transcriptional activity. Our results indicate that RNA genes are throughout heterochromatin in eight chromosomes involving 1/4 of the total heterochromatin which, in this species, is about 67% of the total DNA. Ag-NOR and FISH patterns were not coincident.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1023/A:1017928826304
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