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Showing 1 to 7 of 7 for “"Drosophila pseudoobscura"”.
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Studies on Selection in Natural and Experimental Populations of Drosophila Pseudoobscura
<p>Two genetic characters in Drosophila pseudoobscura were utilized in an investigation of some of the genetic mechanisms in evolution. The characters are (1) body size, which is a continuously-varying, polygenic trait, and (2) the arrangement of genes along the third chromosome, which is a …
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The evolution of prezygotic reproductive isolation in the Drosophila pseudoobscura subgroup
… of prezygotic reproductive isolation in the D. pseudoobscura subgroup. I begin by evaluating how the evolution of female preferences and male sexual characters lead to reinforcement between Drosophila pseudoobscura and its congener D. persimils. In particular, I will evaluate two alternative …
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Selection and the Cytogenetic Control of Mating Activity in Two Chromosomal Arrangements of Drosophila Pseudoobscura
Made available in DSpace on 2014-12-12T01:27:40Z (GMT). No. of bitstreams: 1 7310051.pdf: 3501833 bytes, checksum: d200fb2f6dfc4ae49476084f4a636d17 (MD5) Previous issue date: 1972
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Confocal Characterization of the Apical Testes and Ultrastructural Analysis of the Seminal Visicles of Drosophila pseudoobscura
<p>The Drosophila genus contains thousands of different species. Drosophila melanogaster is the most popular Drosophila species used in biological research. Drosophila pseudoobscura is the model Drosophila species used in our laboratory and is a distant relative to D. melanogaster. Both of these …
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How Linkage Disequilibrium and Recombination Shape Genetic Variation Within and Between Species
… First, I examine nucleotide variation in Drosophila pseudoobscura, and I present a novel test for evidence that particular kinds of selection at linked sites (background selection and/or soft sweeps) may reduce nucleotide variation even in the absence of hard selective sweeps. Second, I …