Ribosomal RNA Homologies among Distantly Related Organisms | Zendy

Arnold J. Bendich | Zendy; Brian J. McCarthy | Zendy

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Ribosomal RNA Homologies among Distantly Related Organisms

Author(s) -

Arnold J. Bendich,

Brian J. McCarthy

Publication year - 1970

Publication title -

proceedings of the national academy of sciences

Language(s) - English

Resource type - Journals

eISSN - 1091-6490

pISSN - 0027-8424

DOI - 10.1073/pnas.65.2.349

Subject(s) - ribosomal rna , biology , phylogenetic tree , 5.8s ribosomal rna , genetics , 18s ribosomal rna , 28s ribosomal rna , rna , internal transcribed spacer , phylogenetics , ribosomal dna , 23s ribosomal rna , 5s ribosomal rna , dna , ribosome , gene

The similarity in base sequences of ribosomal RNA (rRNA) in widely divergent organisms was compared. Hybrids were prepared betweenEscherichia coli and pea rRNA on the one hand and the DNA of several organisms on the other. The varying thermal stabilities of these hybrids were taken as evidence for a hierarchy of rRNA relatedness among some higher plants, and for phylogenetic relationships among some species of bacteria, protozoa, fungi, plants, and animals. The large rRNA molecule appears to have evolved faster than the small rRNA molecule.

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