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Full-Text Articles in Entire DC Network
Biology Ii Lab, Sheila Prabhakar Abraham Dr.
Biology Ii Lab, Sheila Prabhakar Abraham Dr.
Syllabus Repository
No abstract provided.
Burnout And Depression: Two Entities Or One, Irvin Sam Schonfeld, Renzo Bianchi
Burnout And Depression: Two Entities Or One, Irvin Sam Schonfeld, Renzo Bianchi
Publications and Research
Objectives: The purpose of this study was to examine the overlap in burnout and depression. Method: The sample comprised 1,386 schoolteachers (mean age = 43; mean years taught = 15; 77% women) from 18 different U.S. states. We assessed burnout, using the Shirom-Melamed Burnout Measure, and depression, using the depression module of the Patient Health Questionnaire. Results: Treated dimensionally, burnout and depressive symptoms were strongly correlated (.77; disattenuated correlation, .84). Burnout and depressive symptoms were similarly correlated with each of 3 stress-related factors, stressful life events, job adversity, and workplace support. In categorical analyses, 86% of the teachers identified as …
Phylogeography Of Oculina Corals And Their Algal Symbionts: Insights Into The Origin And Expansion Of Oculina Patagonica In The Mediterranean, Karine Eliane Posbic Leydet
Phylogeography Of Oculina Corals And Their Algal Symbionts: Insights Into The Origin And Expansion Of Oculina Patagonica In The Mediterranean, Karine Eliane Posbic Leydet
LSU Doctoral Dissertations
In a world of rapidly changing environmental conditions, species must effectively respond to their changing habitat or risk extinction. The goal of my dissertation is to elucidate the origins and mechanisms underlying the recent successful population expansion of the invasive coral Oculina patagonica in the Mediterranean Sea. To do this, I have utilized nuclear markers and next-generation sequencing data for the coral host and its algal symbiont as well as environmental data. Although only recently first described from the waters of the Mediterranean, genetic, historical demographic, and fossil evidence suggests that O. patagonica has not been anthropogenically introduced from the …
Time-Lapse Polymerizations Triggered By Ph Clock Reactions, Elizabeth Jee
Time-Lapse Polymerizations Triggered By Ph Clock Reactions, Elizabeth Jee
LSU Doctoral Dissertations
The theme of this work is time-lapse polymerizations triggered by pH clock reactions. The first chapter is the introduction and gives a long overview of the different chemistries studied here. The second chapter focuses on the bromate-sulfite clock reaction. Based on some simplified and accepted reaction equations for the bromate-sulfite clock. We presumed it may be possible to increase the pH of the solution via ammonia addition and hinder or significantly reduce the reactivity of the clock reagents, thus creating a storage stable reaction. Adding a polymer system that would not crosslink until the solution became acidic would have created …
Queering Sugar: Kara Walker’S Sugar Sphinx And The Intractability Of Black Female Sexuality, Amber Jamilla Musser
Queering Sugar: Kara Walker’S Sugar Sphinx And The Intractability Of Black Female Sexuality, Amber Jamilla Musser
Publications and Research
This essay analyzes the controversy surrounding artist Kara Walker’s 2014 installation, A Subtlety, or the Marvelous Sugar Baby, to unpack the pleasures and dangers that subtend discussions of black female sexuality. What Walker announced as a tribute to the labor of brown and black bodies produced myriad conversations about pleasure, danger, and black female sexuality. Most art critics argued that the piece reclaimed black female agency; many visitors criticized the work (and the public response to it) as disrespectful and problematic. In the essay, I argue that both of these responses highlight the difficulty of talking about black female …
A Few Notes On Nabokov's Childhood Entomology, Victor Fet
A Few Notes On Nabokov's Childhood Entomology, Victor Fet
Biological Sciences Faculty Research
Nabokov's lepidoptery long posed a question: Was he an amateur or a professional entomologist? Today, it has been amply demonstrated that he was a professional. Kurt Johnson says, "For Nabokov, as with many, fascination with the big picture books of butterflies as a young child grew to concerted collecting as a youngster. As with many scientists, these impressions of youth become a driving life force."3 Nabokov started collecting butterflies in 1906, at age seven, and never ceased; he published his first book of poems ten years later, at age seventeen; his first research paper on butterflies, at age twenty; …
Use Of Dynamic Visualizations For Engineering Technology, Industrial Technology, And Science Education Students: Implications On Ability To Correctly Create A Sectional View Sketch, Petros J. Katsioloudis, Daniel Dickerson, Vukica Jovanovic, Mildred V. Jones
Use Of Dynamic Visualizations For Engineering Technology, Industrial Technology, And Science Education Students: Implications On Ability To Correctly Create A Sectional View Sketch, Petros J. Katsioloudis, Daniel Dickerson, Vukica Jovanovic, Mildred V. Jones
Engineering Technology Faculty Publications
Spatial abilities, specifically visualization, play a significant role in the achievement in a wide array of professions including, but not limited to, engineering, technical, mathematical, and scientific professions. However, there is little correlation between the advantages of spatial ability as measured through the creation of a sectional-view sketch between engineering technology, industrial technology, and science education students. A causal-comparative study was selected as a means to perform the comparative analysis of spatial visualization ability. This study was done to determine the existence of statistically significant difference between engineering technology, industrial technology, and science education students’ ability to correctly create a …
An Implementation Of A High Accuracy Sensor For Distributed Wireless Sensor Network Applications, Jesse Craig Frye
An Implementation Of A High Accuracy Sensor For Distributed Wireless Sensor Network Applications, Jesse Craig Frye
Theses
Biopotentials are typically small electric signals, on the order of a few microvolts to hundreds of millivolts, produced as the result of cellular electrochemical activity in living organisms. Due to high source impedance, investigation of these small electrical signals typically requires use of clinical equipment or professional data acquisition systems that are large, expensive, and utilize AC mains power. Distributed sensor network applications need a low cost, high resolution wireless sensor, suitable for measuring and logging microvolt-level DC accurate signals from high impedance sources. Issues that must be addressed include processing power, power efficiency, auxiliary data storage, and wireless communication …
Performance Of Feature Selection Methods For Machine Learning Based Automatic Malarial Cell Recognition In Wholeslide Images, Vishnu Muralidharan.
Performance Of Feature Selection Methods For Machine Learning Based Automatic Malarial Cell Recognition In Wholeslide Images, Vishnu Muralidharan.
Theses
This work is on investigation of automated detection of malaria parasites in wholeslide images of peripheral blood smears. We compared and analyzed several feature-selection methods for optimization of machine learning using support vector machine (SVM). To this end, cell samples were extracted from the wholeslide image and feature extraction was performed on these samples. In order to identify the best features, a host of feature selection methods were tested. For each set of selected features, the SVM was trained and tuned for optimal model selection using cross-validation and grid-search. Subsequently, test samples were classified using the model. Each feature selection …
Animals And Sovereignty : The Politization Of Bodies In The Avowyng Of Arthur And Yonec, Sarah Moore
Animals And Sovereignty : The Politization Of Bodies In The Avowyng Of Arthur And Yonec, Sarah Moore
Theses
In The Avowyng of Arthur, the King brings back to Carlisle “Bothe the birde and the brede” (491), a reference to the boar he slew and the lady his knights won in the forest. This conjunction of woman and meat on a single line illustrates the political tension in the text between what it is to be human and conversely, what it is to be animal. In addition, in Yonec the knight Muldumarec repeatedly transforms into a hawk, blurring the biological boundaries between animal and human. Although critics have frequently attended to the symbolic roles animals play in both these …
The Effectiveness Of Different Silane Formulations To Functionalize Glass-Based Substrates, Aniket Maharanwar
The Effectiveness Of Different Silane Formulations To Functionalize Glass-Based Substrates, Aniket Maharanwar
Theses
The research in this report is being undertaken to compare the integrity of different methods to coat glass-based substrates with silanes. A typical borosilicate glass, APEXTM glass, was cleaned using a wet cleaning method and quartz substrates was cleaned using dry cleaning methods. The substrates were functionalized with a long-chain silane aminopropyltrimethoxysilane-(APTES), a short-chain chlorotrimethylsilane (Si (CH3)3 Cl) (CTMS), and commercial SigmacoteTM. The concentration of the silane in solution was varied at constant immersion times. The glass substrates functionalized with CTMS, Sigmacote and APTES were immersed in DI water to test their stability. The CTMS and Sigmacote produced water stable …
Small Molecule Proteostasis Regulators That Reprogram The Er To Reduce Extracellular Protein Aggregation, L. Plate, Christina B. Cooley, J. J. Chen, R. J. Paxman, C. M. Gallagher, F. Madoux, J. C. Genereux, W. Dobbs, D. Garza, T. P. Spicer, L. Scampavia, S. J. Brown, H. Rosen, E. T. Powers, P. Hodder, R. L. Wiseman, J. W. Kelly
Small Molecule Proteostasis Regulators That Reprogram The Er To Reduce Extracellular Protein Aggregation, L. Plate, Christina B. Cooley, J. J. Chen, R. J. Paxman, C. M. Gallagher, F. Madoux, J. C. Genereux, W. Dobbs, D. Garza, T. P. Spicer, L. Scampavia, S. J. Brown, H. Rosen, E. T. Powers, P. Hodder, R. L. Wiseman, J. W. Kelly
Chemistry Faculty Research
Imbalances in endoplasmic reticulum (ER) proteostasis are associated with etiologically-diverse degenerative diseases linked to excessive extracellular protein misfolding and aggregation. Reprogramming of the ER proteostasis environment through genetic activation of the Unfolded Protein Response (UPR)-associated transcription factor ATF6 attenuates secretion and extracellular aggregation of amyloidogenic proteins. Here, we employed a screening approach that included complementary arm-specific UPR reporters and medium-throughput transcriptional profiling to identify non-toxic small molecules that phenocopy the ATF6-mediated reprogramming of the ER proteostasis environment. The ER reprogramming afforded by our molecules requires activation of endogenous ATF6 and occurs independent of global ER stress. Furthermore, our molecules phenocopy …
“We Believe The Bible To Be The Word Of God, As Far As It Is Translated Correctly”: Latter-Day Saints And Historical Biblical Criticism, David Rolph Seely
“We Believe The Bible To Be The Word Of God, As Far As It Is Translated Correctly”: Latter-Day Saints And Historical Biblical Criticism, David Rolph Seely
Studies in the Bible and Antiquity
In 1842 Joseph Smith published the basics of Latter-day Saint (LDS) belief in thirteen articles of faith.1 In Article of Faith 8 he succinctly set forth their belief about the Bible: “We believe the Bible to be the word of God.” While there is no evidence that Smith was familiar with Maimonides or his writings, in a strange coincidence Maimonides, in the twelfth century, also set forth thirteen principles of Jewish belief, and number 8 in his list also dealt with the Bible: “I believe with perfect faith that the entire Torah that is now in our possession is the …
Monograph Costing Tool: A User’S Guide, Nancy Maron, Kim Schmelzinger
Monograph Costing Tool: A User’S Guide, Nancy Maron, Kim Schmelzinger
Copyright, Fair Use, Scholarly Communication, etc.
This tool is designed to help presses of all sizes determine the full costs of publishing monographs. It may be useful if you are preparing to apply for a subvention to publish a monograph and need an itemized cost statement. Or, it might just be information you need to have in order to better assess and run your business. The process described below will be easiest if centrally coordinated, whether by the press director, business manager, or the Chief Financial Officer. It will almost certainly require some time for departmental heads. Whether or not you choose to involve more staff …
Evaluation Of Absorption And Uptake Of Soil- And Foliar-Applied Silicon In Rice And Its Accumulation Under Different Phosphorus Rates, Flávia Bastos Agostinho
Evaluation Of Absorption And Uptake Of Soil- And Foliar-Applied Silicon In Rice And Its Accumulation Under Different Phosphorus Rates, Flávia Bastos Agostinho
LSU Master's Theses
Silicon (Si) fertilization has gained attention in rice (Oryza sativa) production. However, the common soil-applied sources are amended at high rates, whereas the efficacy of foliar Si application is yet to be proven. A series of pot experiments were conducted to (1) elucidate the effects of different Si sources on grain yield and Si accumulation of rice supplied with varying P rates, and 2) evaluate Si absorption and uptake by rice via foliar- and soil-application of Si fertilizers. First, three phosphorus (P) rates (0, 112, and 224 kg P ha-1) and three Si sources: two soil-applied (wollastonite and silicate slag) …
Being Student And Practitioner Centered: Lessons Learned From Integrating A Recreation Management Department Into A Business School, Patti A. Freeman, Mat D. Duerden, Brian J. Hill
Being Student And Practitioner Centered: Lessons Learned From Integrating A Recreation Management Department Into A Business School, Patti A. Freeman, Mat D. Duerden, Brian J. Hill
Faculty Publications
In July 2009, Brigham Young University’s Recreation Management (RecM) Department moved to the Marriott School of Management (MSM), beginning its integration into a nationally ranked business school, including the transition from a college with little coordination between departments to one where all majors share a common core of classes. Despite initial feelings of uncertainty, many insights over time emerged as to how the RecM department could better serve students and professionals. This paper shares some of the lessons the RecM Department learned that hold applicability for other recreation departments, including the (1) influence of names on external perceptions and curriculum, …
Adaptive Behavior Deficits In Adults With Autism Spectrum Disorder- Cutoff Scores For The Asd-D-A According To Dsm-5 Criteria., Nicole Cassandra Turygin
Adaptive Behavior Deficits In Adults With Autism Spectrum Disorder- Cutoff Scores For The Asd-D-A According To Dsm-5 Criteria., Nicole Cassandra Turygin
LSU Doctoral Dissertations
With the release of the DSM-5, measures of ASD must be adjusted to take into account the new diagnostic criteria. In the present study, 337 adults with varying levels of intellectual disability who reside in a residential facility were studied. The present study identified potential cutoff scores on an established measure of ASD symptoms in adults, the ASD-A, and compared adaptive behavior levels between groups identified by DSM-IV-TR and DSM-5. The sample was divided into three groups: non-ASD, ASD according to DSM-5 and ASD according to DSM-IV-TR ASD along DSM-IV-TR was determined based on previous diagnoses, while DSM-5 diagnoses were …
Twenty-Five Year Response Of The Herbaceous Layer Of A Temperate Hardwood Forest To Elevated Nitrogen Deposition, Frank S. Gilliam, Nicole Turrill Welch, Anne Hockenberry Phillips, Jake H. Billmyer, William T. Peterjohn, Zachariah K. Fowler, Christopher A. Walter, Mark B. Burnham, Jeffrey D. May, Mary Beth Adams
Twenty-Five Year Response Of The Herbaceous Layer Of A Temperate Hardwood Forest To Elevated Nitrogen Deposition, Frank S. Gilliam, Nicole Turrill Welch, Anne Hockenberry Phillips, Jake H. Billmyer, William T. Peterjohn, Zachariah K. Fowler, Christopher A. Walter, Mark B. Burnham, Jeffrey D. May, Mary Beth Adams
Biological Sciences Faculty Research
Increasing rates of atmospheric deposition of nitrogen (N) present a novel threat to the biodiversity of terrestrial ecosystems. Many forests are particularly susceptible to excess N given their proximity to sources of anthropogenic N emissions. This study summarizes results of a 25-yr treatment of an entire central Appalachian hardwood forest watershed via aerial applications of N with a focus on effects of added N on the cover, species richness, and composition of the herbaceous layer. Research was carried out on two watersheds of the Fernow Experimental Forest (FEF), West Virginia. The long-term reference watershed at FEF (WS4) was used as …
2016 International Symposium On Galliformes (Beijing, China: October 21-23, 2016): Programme And Abstracts, World Pheasant Association, China Ornithological Society
2016 International Symposium On Galliformes (Beijing, China: October 21-23, 2016): Programme And Abstracts, World Pheasant Association, China Ornithological Society
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Evolutionary relationships among galliforms using 1000’s of unlinked loci, Rebecca Kimball
Ecology, behaviour and conservation problems in Siberian grouse Falcipennis falcipennis (Hartlaub 1855), Siegfried Klaus
Taxonomy, genetics and evolution in a highly subspecies-rich pheasant Phasianus colchicus, Yang Liu
Survey of the Blyth’s tragopan Tragopan blythii in western Myanmar, Nan Wang
Activity rhythm of green peafowl (Pavo muticus) in Konglonghe Nature Reserve based on camera-trap data, Pengfei Shan
Studies on unusual incubation behavior and embryonic tolerance of hypothermia by the Sichuan partridge (Arborophila rufipectus), Yiqiang Fu
The breeding behavior and nest selection of Sclater’s monal ( …
Litigating Transphobic Bathroom Bills: Envisioning Comprehensive Legal Strategies For Trans Liberation, Noah Lewis, Andy Izenson, Harper Jean Tobin, Ezra Cukor, Joshua Block, Pooja Gehi, Julie Suk, Kate Shaw
Litigating Transphobic Bathroom Bills: Envisioning Comprehensive Legal Strategies For Trans Liberation, Noah Lewis, Andy Izenson, Harper Jean Tobin, Ezra Cukor, Joshua Block, Pooja Gehi, Julie Suk, Kate Shaw
Cardozo Journal of Equal Rights & Social Justice
This symposium examines the legal and social challenges faced by transgender individuals, particularly in the context of bathroom access and anti-trans legislation. It emphasizes the importance of a holistic approach to trans liberation, combining legal advocacy, grassroots efforts, and education. The analysis highlights the multifaceted nature of trans rights, including the role of storytelling, intersectionality, and the impact of political shifts on LGBT protections. The symposium underscores the need for a comprehensive strategy to achieve equality and justice for trans communities.
Using Subaqueous Soils Data To Manage Coastal Ecosystems: Implications For Bivalve Recruitment, Aquaculture, And Restoration, Brett Matthew Still
Using Subaqueous Soils Data To Manage Coastal Ecosystems: Implications For Bivalve Recruitment, Aquaculture, And Restoration, Brett Matthew Still
Open Access Dissertations
Coastal ecosystems continue to be negatively impacted by increased development and anthropogenic inputs resulting in nutrient enrichment, reduced water quality, loss of seagrasses, sedimentation, and coastal acidification. These stressors, along with historic over harvest and disease, have resulted in the collapse of commercial oyster fisheries in many estuaries worldwide. Expansion of oyster aquaculture has reversed this trend, creating a growing market for oysters as a food resource. This growth however, is being constrained by a number of issues, particularly access to the coastal zone, and identification of productive locations for aquaculture lease development in areas free of conflicting uses.
Coastal …
Correlating Behavior With Non-Invasive Physiological Measures To Evaluate Mating Strategies In Belugas, Justin Thomas Richard
Correlating Behavior With Non-Invasive Physiological Measures To Evaluate Mating Strategies In Belugas, Justin Thomas Richard
Open Access Dissertations
With conservation and ethical concerns facing cetaceans, minimally invasive research on reproduction is important for population management. Belugas (Delphinapterus leucas) are endangered in parts of their range, yet little is known about their breeding behavior and much of the existing research depends on post-mortem sampling. To date, there have been no directed studies of social interactions between belugas during the breeding season, and few studies have attempted to correlate reproductive physiology with behavior in any species of cetacean. Improved understanding of reproductive strategies in this species would facilitate management. This work describes the development of minimally invasive methods …
Lipid Nanoparticle Interactions And Assembles, Matthew Ryan Preiss
Lipid Nanoparticle Interactions And Assembles, Matthew Ryan Preiss
Open Access Dissertations
Novel liposome-nanoparticle assemblies (LNAs) provide a biologically inspired route for designing multifunctional bionanotheranostics. LNAs combine the benefits of lipids and liposomes to encapsulate, transport, and protect hydrophilic and hydrophobic therapeutics with functional nanoparticles. Functional nanoparticles endow LNAs with additional capabilities, including the ability to target diseases, triggered drug release, controlled therapeutic output, and diagnostic capabilities to produce a drug delivery system that can effectively and efficiently deliver therapeutics while reducing side effects. Not only could LNAs make existing drugs better, they could also provide an avenue to allow once promising non-approved drugs (rejected due to harmful side effects, inadequate pharmacokinetics, …
Synthesis, Characterization, And Tumor Targeting Of Novel Ph Sensitive Nanoparticles, Jennifer L. Daniels
Synthesis, Characterization, And Tumor Targeting Of Novel Ph Sensitive Nanoparticles, Jennifer L. Daniels
Open Access Dissertations
When particles approach a nanoscale size, they exhibit novel properties not seen in their bulk counterparts. Therefore, nanoparticles are widely used in the diagnosis and treatment of cancer as imaging, delivery, and therapeutic agents. However, the main challenge is to obtain stable, biocompatible, and tumor-targeting nanomaterials so that they preferentially accumulate in cancerous tissue.
Many contemporary therapeutic and imaging approaches to cancer treatment are based on specific tumor-targeting biomarkers such as antibody or vitamin binding. Although there are significant successes, the inter- and intra-heterogeneity of tumors, their complexity, and their ability to adapt to new conditions often create parts of …
The Effects Of Climate Change On Macroalgal Growth, Trophic Interactions And Community Structure, Gordon Ober
The Effects Of Climate Change On Macroalgal Growth, Trophic Interactions And Community Structure, Gordon Ober
Open Access Dissertations
Global climate change is threatening the structure, function, and health of ecosystems. While factors of climate change have been studied extensively over the past few decades, most research has focused on the response of single organisms or populations; as our ecosystems are comprised of complex interactions and relationships, it is of critical importance to understand how entire communities are going to be impacted by climate change. Ocean acidification (a by-product of increased atmospheric carbon dioxide, CO2), and nutrient loading are two major forces of global change that are projected to have detrimental impacts on coastal marine species and …
Framework For The Automated Disassembly Of Electronic Waste Using The Soar Cognitive Architecture, Nicholas M. Difilippo
Framework For The Automated Disassembly Of Electronic Waste Using The Soar Cognitive Architecture, Nicholas M. Difilippo
Open Access Dissertations
An experimental study was conducted to investigate the feasibility of integrating the cognitive architecture Soar with a robotic system to aid in the disassembly of electronic waste (e-waste). This study was broken up into different parts, first, to examine how well the different sensors and tools that composed the system worked before finally integrating the cognitive architecture Soar to assess how it improved the systems performance. Due to the increasing amounts of e-waste and the adverse effects it has on human health, a robotic system that can aid in the disassembly of e-waste is essential.
The first part in this …
Investigations On Biologically Active Carbohydrates From Natural Sources, Jiadong Sun
Investigations On Biologically Active Carbohydrates From Natural Sources, Jiadong Sun
Open Access Dissertations
Complex carbohydrates exist in almost all species of plants, animals and microorganisms. Because of their physiochemical properties, they have been traditionally applied as emulsifiers and stabilizers in food, cosmetics, textiles and as pharmaceutical ingredients. Complex carbohydrates generally exist as a layer of thick, sequential, hydrous polymers consisting of monosaccharides and non-carbohydrate substituents such as acetate, pyruvate, and phosphate. While complex carbohydrates are generally believed to serve as structural support or energy sources for the producing organisms, their potential biomedical properties have been less investigated. Our understanding of the biological activities of complex carbohydrates is further complicated since most have been …
The Effects Of Spatial Resolution On Impervious Cover Classification In Watersheds And Riparian Zones In Vermont, Jessica N. Morgan
The Effects Of Spatial Resolution On Impervious Cover Classification In Watersheds And Riparian Zones In Vermont, Jessica N. Morgan
Open Access Dissertations
Impervious cover (roads, rooftops, etc.) is a known stressor on stream biota and habitat and is often used as an indicator for assessing the effects of urbanization on stream health. Understanding how spatial data resolution impacts estimates of impervious cover is important for effective modeling and management of water resources at multiple scales. However, broad scale classifications of high spatial resolution data can be time consuming and expensive. High spatial resolution data classifications in Vermont, USA were compared to nationally available impervious cover classifications in order to understand the impact of scale on impervious cover estimates. I used National Agriculture …
Filter Performance Under Simulated Real-World Conditions, Qiang Wang
Filter Performance Under Simulated Real-World Conditions, Qiang Wang
Theses and Dissertations
Evaluating the performance of filter media for filtration applications is essential to assure design engineers and users that filter device will deliver promised performance for specific applications under the environmental stress. The study of particle loading characteristics of filter media in the laboratory setting is typically performed under the steady flow conditions, i.e., at the constant particle concentration and flow rate. In reality, filtration products are operated under the situations that the flow rate and mass concentration of particles are varied in time. The success of translating the laboratory data to estimate the performance of filter media in the fields …
Independent Origination Of Floral Zygomorphy, A Predicted Adaptive Response To Pollinators: Developmental And Genetic Mechanisms, Ghadeer Bukhari, Wenheng Zhang
Independent Origination Of Floral Zygomorphy, A Predicted Adaptive Response To Pollinators: Developmental And Genetic Mechanisms, Ghadeer Bukhari, Wenheng Zhang
Theses and Dissertations
Observations of floral development indicate that floral organ initiation in pentapetalous flowers more commonly results in a medially positioned abaxial petal (MAB) than in a medially positioned adaxial petal (MAD), where the medial plane is defined by the stem and the bract during early floral development. It was proposed that the dominant MAB petal initiation might impose a developmental constraint that leads to the evolution of limited patterns of floral zygomorphy in Asteridae, a family in which the floral zygomorphy develops along the medial plane and results in a central ventral (CV) petal in mature flowers. Here, I investigate whether …