Mississippi State University
Date of Degree
Graduate Thesis - Open Access
Master of Science
College of Arts and Sciences
Department of Biological Sciences
In the present study, I used transcriptomic data to elucidate the role of selection in maintaining genetic cohesion and promoting divergence among wild populations of the annual sunflower Helianthus annuus. I observed that nearly half of the loci displaying high levels of population structure (44%) show allele frequency spectrum skew consistent with recent exposure to natural selection. Among transcriptomic regions at which allele frequency divergence is lowest, fewer loci maintain strong signals of selection (34%). Additionally, I find evidence supporting the maintenance of evolutionarily complex haplotype structure within populations at loci showing high levels of among-population allele frequency divergence.
Kartje, Michael Emmett, "Transcriptome-Wide Prevalence of Selection Among Wild Populations of Helianthus Annuus (Common Sunflower)" (2017). Theses and Dissertations. 4771.