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Article

Five major nuclear ribosomal repeats represent a large and variable fraction of the genomic DNA of Picea rubens and P. mariana.

Molecular biology and evolution - 1 Jan 1992

Bobola M S, Smith D E, Klein A S

Abstract excerpt

The nuclear ribosomal repeats for the 18S, 5.8S, and 26S RNAs of two closely related Picea (spruce) species were characterized by restriction mapping and Southern blot hybridization. Restriction polymorphisms were identified in the IGS and ITS sequences; however, no polymorphism was species specific. As many as five different rDNA repeat units were observed in individual genomes. The repeat size for these...

Topics

Base Sequence
Cloning, Molecular
DNA, Ribosomal
Genetic Variation
Geography
Molecular Sequence Data
Polymorphism, Genetic
RNA, Ribosomal
RNA, Ribosomal, 18S
RNA, Ribosomal, 28S
RNA, Ribosomal, 5.8S

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Restriction Mapping

Trees

Source

Identifiers

PMID: 1552835
DOI: 10.1093/oxfordjournals.molbev.a040702

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 29 Aug 2026. Prepared record publication-1552835-2026-08-29.1. Manifest publication-graph-cohort-2026-08-29.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 29 Aug 2026.

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