Modes of Selection and Recombination Response in Drosophila melanogaster
نویسندگان
چکیده
منابع مشابه
Reduced natural selection associated with low recombination in Drosophila melanogaster.
Synonymous codons are not used equally in many organisms, and the extent of codon bias varies among loci. Earlier studies have suggested that more highly expressed loci in Drosophila melanogaster are more biased, consistent with findings from several prokaryotes and unicellular eukaryotes that codon bias is partly due to natural selection for translational efficiency. We link this model of vary...
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Recombination rate is a key evolutionary parameter that determines the degree to which sites are linked. Estimating recombination rates is thus of crucial importance for population genetic and molecular evolutionary studies. We present here a user-friendly web-based tool that can be used to retrieve recombination rate estimates for single and/or multiple loci in the Drosophila melanogaster geno...
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A second chromosome of Drosophila melanogaster (symbol T-007) isolated from a natural population in Harlingen, Texas, was found to undergo recombination in heterozygous males. Heterozygous males transmit this chromosome with a frequency, k, of about 0.4, considerably reduced from the expected value of 0.5. The frequency of male recombination and the k value are negatively correlated, indicating...
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Evolutionary theory predicts that the rate and level of adaptation will be enhanced in sexual relative to asexual genomes because sexual recombination facilitates the elimination of deleterious mutations and the fixation of beneficial ones by natural selection. To date, the most compelling evidence for this prediction comes from experimental evolution studies and from loci completely lacking re...
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The P family of transposable elements in Drosophila melanogaster transpose with exceptionally high frequency when males from P strains carrying multiple copies of these elements are crossed to females from M strains that lack P elements, but with substantially lower frequency in the reciprocal cross. Transposition is associated with enhanced mutation rates, caused by insertion and deletion of P...
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ژورنال
عنوان ژورنال: Journal of Heredity
سال: 2004
ISSN: 1471-8505
DOI: 10.1093/jhered/esh016