F statistics in Drosophila buzzatii: selection, population size and inbreeding.
نویسندگان
چکیده
منابع مشابه
F statistics in Drosophila buzzatii: selection, population size and inbreeding.
Drosophila buzzatii is confined to reproducing in a well defined patchy environment consisting of rotting cactus cladodes which are ephemeral, permitting at most three generations. Flies emerging from such rots were used to estimate the additive genetic variance within rots and the genetic variance between rots for body size and also were electrophoresed to determine their genotypes at six poly...
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An attempt was made to assess whether the phenotypic differences in body size (as measured by wing length) between wild-caught mating and single Drosophila buzzatii males could be attributed to genetic differences between the samples. Mating males were found to be larger and less variable than a random sample of the population. The progeny of the mating males (produced by crossing to a random f...
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Previous work has shown thorax length to be under directional selection in the Drosophila buzzatii population of Carboneras. In order to predict the genetic consequences of natural selection, genetic variation for this trait was investigated in two ways. First, narrow sense heritability was estimated in the laboratory F2 generation of a sample of wild flies by means of the offspring-parent regr...
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A corollary of the nearly neutral theory of molecular evolution is that the efficiency of natural selection depends on effective population size. In this study, we evaluated the differences in levels of synonymous polymorphism among Drosophila species and showed that these differences can be explained by differences in effective population size. The differences can have implications for the mol...
متن کاملStable Drosophila buzzatii-Drosophila koepferae hybrids.
Previous experiments discovered high rates of chromosomal rearrangements in the progeny of males containing a telomeric segment of Drosophila koepferae in a D. buzzatii genetic background (segmental males). We have performed similar experiments, designed to test whether this chromosomal instability could be explained by a phenomenon similar to P-M hybrid dysgenesis or, alternatively, by a gener...
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ژورنال
عنوان ژورنال: Genetics
سال: 1993
ISSN: 1943-2631
DOI: 10.1093/genetics/134.1.369