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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Genetic Structuring And Community Assembly In Neotropical Birds, Oscar Johnson
Genetic Structuring And Community Assembly In Neotropical Birds, Oscar Johnson
LSU Doctoral Dissertations
The factors that influence how species form is of fundamental interest to biology. Under the framework of the speciation cycle, the process begins by population subdivision creating structured populations that then diverge until two new species form. Following speciation, however, continued divergence is necessary for these new species to be able to coexist without adverse interactions, known as the transition to secondary sympatry. At this point the speciation cycle is complete and the process can begin anew. Many of the factors influencing these processes remain poorly understood. Here, I explore the factors that influence speciation and community assembly in Neotropical …
Comparative Genomics Methods And Applications, Emily N. Alden
Comparative Genomics Methods And Applications, Emily N. Alden
Biomedical Sciences ETDs
Virtually all fields of biology have benefited from the advancements in comparative genomics technologies, specifically in the study of evolution. In this dissertation I develop and use comparative genomic technologies to investigate the novel SARS-CoV-2 virus, assembly the first genome of the black lace domestic angelfish and identify germline genetic variants associated with altered breast cancer-specific survival. Our genome tiling array for the novel coronavirus presents a rapid and cost-effective method to sequence the entire viral genome and can be used to track the rapid evolution of viral variants in the population. The domestic angelfish is a member of the …
Taxonomy And Systematics Of Plumeria L. (Apocynaceae) In The Caribbean Islands, Nichole M. Tiernan
Taxonomy And Systematics Of Plumeria L. (Apocynaceae) In The Caribbean Islands, Nichole M. Tiernan
FIU Electronic Theses and Dissertations
Plumeria L. (Apocynaceae) is a genus of flowering trees and shrubs that are often cultivated in tropical gardens worldwide. The majority of its species occur in the Greater Antilles with many as single-island endemics. The only comprehensive revision for the genus was done by Robert E. Woodson Jr. (1937) who recognized only seven species and created a ‘Plumeria obtusa complex’ with a plethora of synonyms. The first study provides an overview of the Caribbean Island members of the genus with a focus on Plumeria filifolia Griseb., a thin-leaved species endemic to Cuba that is featured because of its incredible …
Dynamics Of Hybrid Zones At A Continental Scale, Bradley T. Martin
Dynamics Of Hybrid Zones At A Continental Scale, Bradley T. Martin
Graduate Theses and Dissertations
Hybridization has traditionally been viewed as a happenstance that negatively impacts populations, but is now recognized as an important evolutionary mechanism that can substantially impact the evolutionary trajectories of gene pools, influence adaptive capacity, and contravene or reinforce divergence. Physiographic processes are important drivers of dispersal, alternately funneling populations into isolation, promoting divergence, or facilitating secondary contact of diverged populations, increasing the potential for hybridization. In North America, glacial-interglacial cycles and geomorphological changes have provided a dynamic backdrop over the last two million years that promoted such oscillations of population contraction and expansion. These biogeographic processes have resulted in regional …
Identification And Sequence Analysis Of Set Superfamily Genes In Hymenopteran Insects, Tanima Joshi
Identification And Sequence Analysis Of Set Superfamily Genes In Hymenopteran Insects, Tanima Joshi
Scripps Senior Theses
Post-translational chemical modifications of histones, the proteins that package DNA, are a key component of the “language” of epigenetics. SET (Suppressor of Variegation 39, Enhancer of Zeste, Trithorax) domain-containing proteins are crucial enzymes that establish histone methylations as a major part of the histone code. Studies using the fruit fly, Drosophila melanogaster, as a model organism have provided most of the known information on SET genes/protein diversity and function in insects. To expand our knowledge of this important protein family, I identified all SET domain-containing genes in a select group of insects belonging to the Hymenoptera order: wasps, bees, ants, …
Genome-Wide Characterization Of Lateral Organ Boundaries Domain Genes In Sunflower (Helianthus Annuus L.), Saleh M. Aljurbua
Genome-Wide Characterization Of Lateral Organ Boundaries Domain Genes In Sunflower (Helianthus Annuus L.), Saleh M. Aljurbua
Masters Theses
Lateral Organ Boundaries (LBD) gene family encodes transcription factors found only in plants with essential roles in growth, development, and response to biotic and abiotic factors. The sunflower (Helianthus annuus L., Asteraceae family) LBD genes were studied using different in silico and phylogenetic approaches including four major steps: gene identification, phylogenic analysis, structural analysis, and expression analysis. Sixty-four sunflower LBD genes (HaLBDs) were identified using query search of all Arabidopsis LBD genes against sunflower genome (version r1.2) followed by LBD domain sequence verification. A phylogenetic tree was reconstructed using MEGA-X program. The identified genes were phylogenetically classified into two main …