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Evolution of transcribed and spacer sequences in the ribosomal RNA genes of Drosophila



Evolution of transcribed and spacer sequences in the ribosomal RNA genes of Drosophila



Cell 17(3): 607-614



Examination of the ribosomal RNA (rRNA) gene of six sibling species that make up the D. melanogaster subgroup reveals that the nontranscribed spacer is highly conserved during evolution. Indeed, the spacer is at least as conserved as the transcribed rRNA sequence in four of the six species and only slightly less conserved in the others. These data support the hypothesis previously suggested (Tartof and Dawid, 1976) that selection has a significant role in maintaining the parallel evolution of genetically separate but homologous redundant gene clusters.

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Accession: 015761877

Download citation: RISBibTeXText

PMID: 113106

DOI: 10.1016/0092-8674(79)90268-x


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