The willistoni group of sibling species of Drosophila.
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چکیده
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منابع مشابه
Enzyme variability in the Drosophila willistoni group. I. Genetic differentiation among sibling species.
We have studied by gel electrophoresis the variability of 14 structural genes in four sibling species, Drosophila willistoni, D. paulistorum, D. equinoxialis, and D. tropicalis. Samples of about 30 populations from different parts of the distribution areas of each species were examined. Genetic variants are found at every locus; 67% of the loci are polymorphic, having two or more alleles, the r...
متن کاملInterspecific and intraspecific comparisons of the period locus in the Drosophila willistoni sibling species.
The period (per) locus has received much attention in molecular evolution studies because it is one of the best studied "behavioral genes" and because it offers insight into the evolution of repetitive sequences. We studied most of the coding region of per in Drosophila willistoni and confirmed previously observed patterns of conservation and divergence among distantly related species. Five reg...
متن کاملEvolutionary dynamics of wAu-like Wolbachia variants in neotropical Drosophila spp.
Wolbachia bacteria are common intracellular symbionts of arthropods and have been extensively studied in Drosophila. Most research focuses on two Old Word hosts, Drosophila melanogaster and Drosophila simulans, and does not take into account that some of the Wolbachia associations in these species may have evolved only after their fast global expansion and after the exposure to Wolbachia of pre...
متن کاملEvolution of the Adh locus in the Drosophila willistoni group: the loss of an intron, and shift in codon usage.
We report here the DNA sequence of the alcohol dehydrogenase gene (Adh) cloned from Drosophila willistoni. The three major findings are as follows: (1) Relative to all other Adh genes known from Drosophila, D. willistoni Adh has the last intron precisely deleted; PCR directly from total genomic DNA indicates that the deletion exists in all members of the willistoni group but not in any other gr...
متن کاملPostmating Reproductive isolation between strains of Drosophila willistoni
Speciation can occur through the presence of reproductive isolation barriers that impede mating, restrict cross-fertilization, or render inviable/sterile hybrid progeny. The D. willistoni subgroup is ideally suited for studies of speciation, with examples of both allopatry and sympatry, a range of isolation barriers, and the availability of one species complete genome sequence to facilitate gen...
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ورودعنوان ژورنال:
- Evolution; international journal of organic evolution
دوره 3 4 شماره
صفحات -
تاریخ انتشار 1949