Nucleotide sequence of a retrotransposon297isolated fromDrosophila simulans
نویسندگان
چکیده
منابع مشابه
Genomic effects of nucleotide substitutions in Drosophila simulans.
Selective fixation of beneficial mutations reduces levels of linked, neutral variation. The magnitude of this "hitchhiking effect" is determined by the strength of selection and the recombination rate between selected and neutral sites. Thus, depending on the values of these parameters and the frequency with which directional selection occurs, the genomic scale over which directional selection ...
متن کاملNucleotide sequence divergence in the A+T-rich region of mitochondrial DNA in Drosophila simulans and Drosophila mauritiana.
We have determined the nucleotide sequences of two regions within the A+T-rich region of mitochondrial DNA (mtDNA) in the siIII type of Drosophila simulans and the maI type of D. mauritiana. The sequences of the two regions in siIII and maI are almost identical. The sequences include elements corresponding to the type I and type II repeats elements and the T-stretches as reported in D. melanoga...
متن کاملHigh nucleotide sequence variation in a region of low recombination in Drosophila simulans is consistent with the background selection model.
We surveyed nucleotide sequence variation at glucose dehydrogenase (Gld), in a region of low recombination on chromosome 3R, from a population sample of Drosophila simulans. The levels of nucleotide variation were surprisingly high. There was no departure from the expectation of a neutral model for the level of polymorphism, indicating no evidence of a selective sweep in this region. There was ...
متن کاملThe frequency distribution of nucleotide variation in Drosophila simulans.
Patterns of codon bias in Drosophila suggest that silent mutations can be classified into two types: unpreferred (slightly deleterious) and preferred (slightly beneficial). Results of previous analyses of polymorphism and divergence in Drosophila simulans were interpreted as supporting a mutation-selection-drift model in which slightly deleterious, silent mutants make significantly greater cont...
متن کاملReduced X-linked nucleotide polymorphism in Drosophila simulans.
Population genetic theory predicts that selectively driven changes of allele frequency for both beneficial and deleterious mutants reduce polymorphism at tightly linked sites. All else being equal, these reductions in polymorphism are expected to be greater when recombination rates are lower. Therefore, the empirical observation of a positive correlation between recombination rates and amounts ...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1986
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/14.23.9521