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Nuclear and mitochondrial ribosomal RNA variability in theobscuragroup ofDrosophila

โœ Scribed by H. Ruttkay; M. Solignac; D. Sperlich

Publisher
Springer Netherlands
Year
1992
Tongue
English
Weight
593 KB
Volume
85
Category
Article
ISSN
0016-6707

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โœฆ Synopsis

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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