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. 1992;85(2):131-8.
doi: 10.1007/BF00120319.

Nuclear and mitochondrial ribosomal RNA variability in the obscura group of Drosophila

H Ruttkay  1 , M Solignac, D Sperlich
Affiliations

Nuclear and mitochondrial ribosomal RNA variability in the obscura group of Drosophila

H Ruttkay et al. Genetica. 1992.

Abstract

Parts of 28S (nuclear) and 12S (mitochondrial) ribosomal RNA of Palearctic, Nearctic and African species of the obscura group have been sequenced by the direct method of sequencing. Rates of nucleotide substitutions in both molecules were compared. The nucleotide divergence is higher in the mitochondrial rRNA. Average distances of species taken in pairwise were compared to results obtained with the melanogaster subgroup: the divergence of nuclear rRNA appears lower, that of the mtDNA higher whereas genetic distances (allozymes) and sncDNA distances are similar. Noticeable variability of evolutionary rates can be observed even in low taxonomical levels. Phylogenetic trees for the obscura group are in general agreement with those obtained with other characters.

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