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Articles 1 - 8 of 8
Full-Text Articles in Biology
Mating System Biology Of The Florida Native Plant: Illicium Parviflorum, Nicholas Earl Buckley
Mating System Biology Of The Florida Native Plant: Illicium Parviflorum, Nicholas Earl Buckley
Masters Theses
Self-incompatibility is thought to have played a profound role in the evolution of the angiosperms. However, there is little evidence of self-incompatibility systems in early diverging lineages of flowering plants. Illicium parviflorum, one such early-divergent angiosperm, is an evergreen perennial species endemic to central Florida, particularly within the Ocala National Forest. Although locally abundant, I. parviflorum is currently listed as endangered at the state level due to being under constant threat of habitat disturbance and over-harvesting. Notably, this species had been described as self-incompatible due to its low seed-set. However, low seed set may also be a result of …
Analyzing The Roles Of Scl And Gata3 In Zebrafish Spinal Cord Interneuron Specification And Function, Kadiah Oyah Kamara
Analyzing The Roles Of Scl And Gata3 In Zebrafish Spinal Cord Interneuron Specification And Function, Kadiah Oyah Kamara
Renée Crown University Honors Thesis Projects - All
My project focuses on the V2 cells of the zebrafish spinal cord. The V2 cells are an unusual class of spinal cells because they all originate from molecularly indistinguishable p2 progenitor cells in the spinal cord. However, as these cells become post-mitotic and differentiate, they start to express different transcription factor genes that allow them to initially develop into two sets of molecularly distinct cells. As differentiation continues, at least one more class of molecularly distinct cells develops. Just as in other vertebrates, in zebrafish the V2 cells differentiate into at least two functionally distinct classes of cells, specifically, the …
Role Of Progesterone Receptors In Neonatal Ovary Development, Marta N. Dzyadyk
Role Of Progesterone Receptors In Neonatal Ovary Development, Marta N. Dzyadyk
Renée Crown University Honors Thesis Projects - All
In female mammals, proper oocyte development is a vital prerequisite for future gamete viability and fertility. This development of oocytes, known as oogenesis, begins with the migration of primordial germ cells to the genital ridge of the early embryo, where multiple rounds of mitotic division occur without complete cytokinesis. The result is temporary cyst morphology. Cyst breakdown is a crucial process in the next developmental stage, resulting in formation of the single oocytes which will grow in follicles surrounded by granulosa cells and eventually develop into eggs. These aspects of embryogenesis are conserved across multiple species, including Drosophila, mice, and …
The Developmental And Adaptive Role Of Mitogen Activated Protein Kinase Pathways During Preimplantation Development, Christine E. Bell
The Developmental And Adaptive Role Of Mitogen Activated Protein Kinase Pathways During Preimplantation Development, Christine E. Bell
Electronic Thesis and Dissertation Repository
The preimplantation period of development represents the highest interval of embryonic loss throughout pregnancy. It is therefore imperative that we elucidate the mechanisms involved in regulating preimplantation embryonic responses to stress and that govern development. The MAPK pathways are involved in both responding to environmental stress and regulation of development throughout embryogenesis, and are therefore good candidates to study the mechanisms involved in preimplantation embryonic adaptation to stress and development. The preimplantation embryo culminates in the development of a fluid filled structure called the blastocyst. It is at this stage the first differentiation events occur and the trophectoderm (TE), which …
The Methuselah Family Of G Protein Coupled Receptors, Meghna V. Patel
The Methuselah Family Of G Protein Coupled Receptors, Meghna V. Patel
Wayne State University Dissertations
G protein-coupled receptors (GPCRs) are one of the largest class of transmembrane signaling proteins that regulate essential developmental and physiological processes in a cell. GPCR success is illustrated by their abundance across both invertebrate and vertebrate genomes. Phylogenetic analyses show that GPCR families have undergone a lot of gene gain and loss during insect evolution. In Drosophila melanogaster, the fifteen Methuselah/Methuselah-like (Mth/Mthl) genes are in fact an insect specific family of GPCRs. In our study, we conducted a phylogenetic analysis using receptor sequences from five Drosophila species and two related insects, including Tribolium and Anopheles to examine the evolution of …
Systematics Of Leptopelis (Anura: Arthroleptidae) From The Itombwe Plateau, Eastern Democratic Republic Of The Congo, Francisco Portillo
Systematics Of Leptopelis (Anura: Arthroleptidae) From The Itombwe Plateau, Eastern Democratic Republic Of The Congo, Francisco Portillo
Open Access Theses & Dissertations
Leptopelis, a genus of Central African treefrogs, includes 51 species that live in tropical forests and savannas. Currently, only two species of Leptopelis are known from the poorly explored Itombwe Plateau in eastern Democratic Republic of the Congo (DRC). Itombwe is renowned among conservationists for its rich and endemic amphibian fauna, including: Xenopus itombwensis, Chrysobatrachus cupreonitens, Laurentophryne parkeri, Hyperolius leleupi and at least three species of Arthroleptis. Evolutionary relationships of Itombwe Leptopelis were examined by sequencing two mitochondrial genes (16S: 557 bp [base pairs], cyt b: 620 bp) and one nuclear gene (RAG1: 761 bp). Results recovered strong support for …
The Role Of An Rna Binding Protein Hnrnp K During Axon Development And Regeneration In Xenopus Laevis, Yuanyuan Liu
The Role Of An Rna Binding Protein Hnrnp K During Axon Development And Regeneration In Xenopus Laevis, Yuanyuan Liu
Legacy Theses & Dissertations (2009 - 2024)
Coordinated synthesis and assembly of the cytoskeletal network contribute significantly to morphological changes during axon outgrowth. Previous studies demonstrated that heterogeneous ribonucleoprotein K (hnRNP K), an RNA binding protein, binds to the 3'-untranslated regions of all neurofilament triplet subunits, the most abundant components of the axonal cytoskeleton. These findings raised the hypothesis that hnRNP K post-transcriptionally mediates the coordinated expression of axonal cytoskeletal components. In my thesis, I test this hypothesis during both axonal development and regeneration.
A Proposal To Test The Effects Of Factor Ecat1 On Pluripotency, From Reprogramming To Differentiation Of Human Somatic Cells, Vritti R. Goel
A Proposal To Test The Effects Of Factor Ecat1 On Pluripotency, From Reprogramming To Differentiation Of Human Somatic Cells, Vritti R. Goel
CMC Senior Theses
The field of stem cell research has been growing more because of the interest in using stem cells to cure diseases and heal injuries. Human embryonic stem cells, because of the controversy surrounding them—and subsequently the difficulties in acquiring samples of the existing aging cell lines—can only be used in limited capacities. While the development of induced pluripotent stem cells in the last decade has allowed the field to progress closer to medical treatments, the low efficiency of reprogramming a somatic cell to a pluripotent state, and the vast molecular and genomic differences between human embryonic stem cells and human …