Seasonal fluctuations of cosmopolitan inversion frequencies in a natural population of Drosophila melanogaster
نویسندگان
چکیده
منابع مشابه
Transposable element numbers in cosmopolitan inversions from a natural population of Drosophila melanogaster.
Population studies of the distribution of transposable elements (TEs) on the chromosomes of Drosophila melanogaster have suggested that their copy number increase due to transposition is balanced by some form of natural selection. Theory suggests that, as a consequence of deleterious ectopic meiotic exchange between TEs, selection can favor genomes with lower TE copy numbers. This predicts that...
متن کاملTemporal Stability of Allozyme Frequencies in a Natural Population of DROSOPHILA MELANOGASTER.
Seasonal patterns of allozyme variation are examined for 12 polymorphic enzyme loci in Drosophila melanogaster. The data derive from a total of 56 samples taken from a natural population in the Summer and Fall of 1978 and 1979. Samples were obtained at approximately five-day intervals and assayed for 6-phosphogluconate dehydrogenase (6Pgd), phosphoglucomutase (Pgm) and glucose-6-phosphate dehyd...
متن کاملThe structure and population genetics of the breakpoints associated with the cosmopolitan chromosomal inversion In(3R)Payne in Drosophila melanogaster.
We report here the breakpoint structure and sequences of the Drosophila melanogaster cosmopolitan chromosomal inversion In(3R)P. Combining in situ hybridization to polytene chromosomes and long-range PCR, we have identified and sequenced the distal and proximal breakpoints. The breakpoints are not simple cut-and-paste structures; gene fragments and small duplications of DNA are associated with ...
متن کاملMapping regions within cosmopolitan inversion In(3R)Payne associated with natural variation in body size in Drosophila melanogaster.
Associations between genotypes for inversions and quantitative traits have been reported in several organisms, but little has been done to localize regions within inversions controlling variation in these traits. Here, we use an association mapping technique to identify genomic regions controlling variation in wing size within the cosmopolitan inversion In(3R)Payne in Drosophila melanogaster. P...
متن کاملPopulation Genomics of Inversion Polymorphisms in Drosophila melanogaster
Chromosomal inversions have been an enduring interest of population geneticists since their discovery in Drosophila melanogaster. Numerous lines of evidence suggest powerful selective pressures govern the distributions of polymorphic inversions, and these observations have spurred the development of many explanatory models. However, due to a paucity of nucleotide data, little progress has been ...
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ژورنال
عنوان ژورنال: Genetics Selection Evolution
سال: 1990
ISSN: 0754-0264
DOI: 10.1051/gse:19900104