Is spliced-leader (SL) trans-splicing an ancestral eukaryotic characteristic that has been lost
in multiple lineages, or did it arise independently in the various phyla in which it occurs …

With the advent of long-read sequencing, previously unresolvable genomic elements are
being revisited in an effort to generate fully complete reference genomes. One such element …

In recent years, avian systematics has been characterized by a diminished reliance on
morphological cladistics of modern taxa, intensive palaeornithogical research stimulated by …

Ribosomal DNA (rDNA) loci encoding 5S and 45S (18S-5.8 S-28S) rRNAs are important
components of eukaryotic chromosomes. Here, we set up the animal rDNA database …

The large 45S rDNA chromosome sites have often been analyzed in fish. In contrast, little is
known about the 5S genes in this animal group. In the genus Leporinus, the NOR …

A single NOR-bearing chromosome pair was identified by silver nitrate staining in a previous
study of the fish Prochilodus argenteus from the S ã o Francisco River (MG, Brazil), with a …

In eukaryotes, the primary components of the ribosome are encoded by multicopy nuclear
ribosomal RNA (rRNA) genes: 28/26S, 18S, 5.8 S, and 5S. Copies of these genes are …

In higher eukaryotes, the 5S ribosomal multigene family (5S rDNA) is tandemly organized in
repeat units composed of a coding region (5S rRNA gene) and a nontranscribed spacer …

In this paper we describe Southern blot hybridization results probed with 5S rRNA genes for
several Neotropical fish species representing different taxonomic groups. All the studied …

Although both are salient features of genomes, at first glance ribosomal DNAs and
transposable elements are genetic elements with not much in common: whereas ribosomal …