Graduation Semester and Year

2010

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy in Quantitative Biology

Department

Biology

First Advisor

Jeffery Demuth

Abstract

In this study, I investigate factors underlying reproductive isolation in Drosophila. I begin (Part I) by measuring behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster, and asking the following questions: What is the pattern? What are the sensory cues leading to isolation? In Part II, I present results of a genomic screen for candidate genes underlying behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster. Then I turn to the genomic causes of postzygotic reproductive isolation (Parts III and IV): What are the possible genes associated with hybrid sterility? What are the relationships between fertility/sterility and genotypes and allelic expression? What are the regulatory changes in hybrid sterile males compared to normal males? Finally (Part V), I broaden the analysis from a single gene to a microsatellite mapping of chromosome III, and ask the following question: How many loci are involved in hybrid sterility? What is the degree of microsatellite divergence between species?

Disciplines

Biology | Life Sciences

Comments

Degree granted by The University of Texas at Arlington

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