Open Access. Powered by Scholars. Published by Universities.®
- Publication Year
Articles 1 - 30 of 37
Full-Text Articles in Life Sciences
Modeling Hybrid Novel Traits: A Case Study In Complex Petal Pigment Patterning In Hybrid Mimulus, Xingyu Zheng
Modeling Hybrid Novel Traits: A Case Study In Complex Petal Pigment Patterning In Hybrid Mimulus, Xingyu Zheng
Undergraduate Honors Theses
Hybridization between species, by introducing dramatic trait variation into the population and creating viable, transgressive offsprings with novel phenotypes, can have huge evolutionary implications. Some hybrid traits have been studied in the classical genetics or population genetics context, but most complex traits are determined by multiple causes, e.g. the number of loci involved, the rewiring of the genetic circuitries, and the changes in gene expression pattern. Using the hybrid monkeyflower petal pigment patterning as an example, we present a case study to investigate complex hybrid traits in a systematic manner that includes empirical data analysis and quantitative mathematical modeling of …
Speciation Dynamics Of Diverging Allopolyploid Monkeyflower (Mimulus), Caroline Victoria Schlutius
Speciation Dynamics Of Diverging Allopolyploid Monkeyflower (Mimulus), Caroline Victoria Schlutius
Dissertations, Theses, and Masters Projects
Our understanding of speciation has been greatly improved with advances in genomic technology, but most of our knowledge of speciation is still built on research of diploid systems. Polyploids, however, are found in many lineages across the tree of life and exhibit considerably different evolutionary dynamics than diploids. Here, we investigate patterns of population structure and divergence in a system of two allopolyploid species of Mimulus (monkeyflower) that occur sympatrically in Chile: M. luteus and M. cupreus. We find that while the two species have consistent phenotypic differences across the range, they are genetically clustered into a northern and southern …
Phylogeny, Ontogeny And Distribution Of The Ribbonfishes (Lampridiformes: Trachipteridae), Jennifer M. Martin
Phylogeny, Ontogeny And Distribution Of The Ribbonfishes (Lampridiformes: Trachipteridae), Jennifer M. Martin
Dissertations, Theses, and Masters Projects
The ribbonfish family Trachipteridae (Lampridiformes) includes three well-defined genera (Trachipterus, Desmodema, and Zu), which are distributed worldwide throughout the pelagic marine environment as with most families of Lampridiformes, drastic changes in morphology occur throughout ontogeny due to extreme allometric growth. Combined with the rarity of specimens, this has led to the description of different life history stages as different species, rather than as part of the ontogenetic continuum of a single species. There is significant uncertainty concerning the ontogeny, distribution, nomenclature, number and phylogenetic affinity of trachipterid and other lampridiform genera.;The first chapter of my dissertation is a taxonomic review …
Developmental Plasticity In Response To Familiar And Unfamiliar Predators In The Mud Snail, Ilyanassa Obsoleta, Kelly Strickland Hoolihan
Developmental Plasticity In Response To Familiar And Unfamiliar Predators In The Mud Snail, Ilyanassa Obsoleta, Kelly Strickland Hoolihan
Dissertations, Theses, and Masters Projects
No abstract provided.
Age-Related Changes In The Neural Correlates Of Interval Timing, Cutter Augustus. Lindbergh
Age-Related Changes In The Neural Correlates Of Interval Timing, Cutter Augustus. Lindbergh
Dissertations, Theses, and Masters Projects
No abstract provided.
Understanding The Origins, Dispersal, And Evolution Of Bonamia Species (Phylum Haplosporidia) Based On Genetic Analyses Of Ribosomal Rna Gene Regions, Kristina M. Hill
Understanding The Origins, Dispersal, And Evolution Of Bonamia Species (Phylum Haplosporidia) Based On Genetic Analyses Of Ribosomal Rna Gene Regions, Kristina M. Hill
Dissertations, Theses, and Masters Projects
No abstract provided.
Evolutionary Analysis Of The Glutamic Acid Decarboxylase 67 Immediate Upstream Region In African Clawed Frogs, Jonathan Lomax Boyd
Evolutionary Analysis Of The Glutamic Acid Decarboxylase 67 Immediate Upstream Region In African Clawed Frogs, Jonathan Lomax Boyd
Dissertations, Theses, and Masters Projects
No abstract provided.
A Molecular Phylogeny Of The Genus Bonamia Based On Sequence Data Of The Ribosomal Rna (Rrna) Gene Complex, Delonna M. White
A Molecular Phylogeny Of The Genus Bonamia Based On Sequence Data Of The Ribosomal Rna (Rrna) Gene Complex, Delonna M. White
Dissertations, Theses, and Masters Projects
No abstract provided.
Population Genetic Structure Of Escolar (Lepidocybium Flavobrunneum) And A Molecular Phylogeny Of The Trichiuroidea, Kirsten Brendtro
Population Genetic Structure Of Escolar (Lepidocybium Flavobrunneum) And A Molecular Phylogeny Of The Trichiuroidea, Kirsten Brendtro
Dissertations, Theses, and Masters Projects
No abstract provided.
Response To Selection Of Peromyscus Leucopus: Response Of Spermatogenesis And Reproductive Behavior To Selection On Gonadal Development In An Outbred Population Of White-Footed Mice (Peromyscus Leucopus), Kathleen Rathbun Sharp
Response To Selection Of Peromyscus Leucopus: Response Of Spermatogenesis And Reproductive Behavior To Selection On Gonadal Development In An Outbred Population Of White-Footed Mice (Peromyscus Leucopus), Kathleen Rathbun Sharp
Dissertations, Theses, and Masters Projects
No abstract provided.
Fetal Alcohol And Adolescent Behavior: The Effects Of Postnatal Binge Ethanol Exposure On The Behavioral Development Of Adolescent Animals, Katherine A. Colona
Fetal Alcohol And Adolescent Behavior: The Effects Of Postnatal Binge Ethanol Exposure On The Behavioral Development Of Adolescent Animals, Katherine A. Colona
Dissertations, Theses, and Masters Projects
No abstract provided.
Relationships Between Experience, Credentials, Moral Development, Conceptual Level, And Self-Efficacy Of School Counselors, Susan Emilie Halverson
Relationships Between Experience, Credentials, Moral Development, Conceptual Level, And Self-Efficacy Of School Counselors, Susan Emilie Halverson
Dissertations, Theses, and Masters Projects
No abstract provided.
Phylogenetic Implications Of Sporangial Ultrastructure In The Subfamily Lithophylloideae (Corallinales, Rhodophyta), Mark T. Bedell
Phylogenetic Implications Of Sporangial Ultrastructure In The Subfamily Lithophylloideae (Corallinales, Rhodophyta), Mark T. Bedell
Dissertations, Theses, and Masters Projects
No abstract provided.
Cell-Cell Interactions In The Development Of The Vascular System Of Xenopus, Krista Marie Stimson
Cell-Cell Interactions In The Development Of The Vascular System Of Xenopus, Krista Marie Stimson
Dissertations, Theses, and Masters Projects
No abstract provided.
The Development Of Affinity Maturation In Rainbow Trout Oncorhynchus Mykiss, Ing Wei Khor
The Development Of Affinity Maturation In Rainbow Trout Oncorhynchus Mykiss, Ing Wei Khor
Dissertations, Theses, and Masters Projects
No abstract provided.
Phylogeny Of The Haplosporidia (Eukaryota: Alveolata) Based On Small Subunit Ribosomal Rna Gene Sequence, Brenda Sandy Flores
Phylogeny Of The Haplosporidia (Eukaryota: Alveolata) Based On Small Subunit Ribosomal Rna Gene Sequence, Brenda Sandy Flores
Dissertations, Theses, and Masters Projects
No abstract provided.
Adrenal Zona Reticularis Changes Associated With Pubertal Transition In Control Versus Population-Inhibited Prairie Deermice, Bradley Alan Cherry
Adrenal Zona Reticularis Changes Associated With Pubertal Transition In Control Versus Population-Inhibited Prairie Deermice, Bradley Alan Cherry
Dissertations, Theses, and Masters Projects
No abstract provided.
Serum Corticosterone Concentrations Related To Seasonal Variation In Reproductive Development In Natural Populations Of Peromyscus Leucopus Noveboracensis, Serena Khosla
Dissertations, Theses, and Masters Projects
No abstract provided.
Social Influences On Reproductive Maturation In Female White-Footed Mice (Peromyscus Leucopus Noveboracensis), Michelle Lee Mabry
Social Influences On Reproductive Maturation In Female White-Footed Mice (Peromyscus Leucopus Noveboracensis), Michelle Lee Mabry
Dissertations, Theses, and Masters Projects
No abstract provided.
The Isolation And Characterization Of A Novel G-Protein-Coupled Receptor Involved In Angiogenesis, Rebecca Ruth Stucki Miles
The Isolation And Characterization Of A Novel G-Protein-Coupled Receptor Involved In Angiogenesis, Rebecca Ruth Stucki Miles
Dissertations, Theses, and Masters Projects
No abstract provided.
Burden In Spousal Caregivers: A Correlational Study Of The Effect And Interaction Of Stressors, Vulnerability, Psychological Resources And Social Supports On The Development Of Burden In Spousal Caregivers Of The Chronically Ill, Sheila Marie Crossen-Powell
Burden In Spousal Caregivers: A Correlational Study Of The Effect And Interaction Of Stressors, Vulnerability, Psychological Resources And Social Supports On The Development Of Burden In Spousal Caregivers Of The Chronically Ill, Sheila Marie Crossen-Powell
Dissertations, Theses, and Masters Projects
This study investigated burden in a convenience, nonrandom sample of 120 spousal caregivers of cardiac patients, who resided at home in the Richmond, VA area, had health insurance, and received medical care from private providers. Using Vitaliano's theory that burden is a function of stressors and personal vulnerability moderated by psychological resources and social supports, the study examined the relationships between those five constructs.;Burden was measured by the Brief Symptom Inventory and Montgomery's Scales of Objective and Subjective Burden. The Hassles and Uplifts Scales was used to measure stressors; demographic data and the Self control, Responsibility, Socialization, Psychological Mindedness, Tolerance, …
The Relationships Between Retrospective Perceptions Of An Alcoholic Home Environment With Levels Of Differentiation Of Self And Trait Anxiety In Adult Children Of Alcoholics, Barbara Lynn Rojas-Hughes
The Relationships Between Retrospective Perceptions Of An Alcoholic Home Environment With Levels Of Differentiation Of Self And Trait Anxiety In Adult Children Of Alcoholics, Barbara Lynn Rojas-Hughes
Dissertations, Theses, and Masters Projects
The purpose of this study was to investigate the relationships between adult children of alcoholics (ACOA's) recollections of their family of origin home environments, with present day levels of ACOA differentiation of self, and trait anxiety. The author explored the influence of ACOA gender differences and a variety of demographic information.;The ACOA volunteers for this study were recruited from The College of William and Mary in Virginia. to be included in the study, subjects must have met the following criteria: (a) the volunteer's age must have been 18 years or above; (b) subjects met the ACOA criteria by scoring a …
Ontogeny Of The Sexually Dimorphic Sonic Muscle In Three Sciaenid Species, Gary Hill
Ontogeny Of The Sexually Dimorphic Sonic Muscle In Three Sciaenid Species, Gary Hill
Dissertations, Theses, and Masters Projects
No abstract provided.
Ultrastructure And Development Of The Female Reproductive Branches Of Polysiphonia Harveyi, Sharon Thompson Broadwater
Ultrastructure And Development Of The Female Reproductive Branches Of Polysiphonia Harveyi, Sharon Thompson Broadwater
Dissertations, Theses, and Masters Projects
No abstract provided.
Morphology And Development Of Hatchery Cultured American Shad (Alosa Sapidissima Wilson), With A Comparison Between Field Sampled And Cultured, James Roy Johnson
Morphology And Development Of Hatchery Cultured American Shad (Alosa Sapidissima Wilson), With A Comparison Between Field Sampled And Cultured, James Roy Johnson
Dissertations, Theses, and Masters Projects
No abstract provided.
Age Determination And Growth Of The Blueback Herring, Alosa Aestivalis, Jack Gerald Travelstead
Age Determination And Growth Of The Blueback Herring, Alosa Aestivalis, Jack Gerald Travelstead
Dissertations, Theses, and Masters Projects
No abstract provided.
The Development Of Blue Crabs, Callinectes Sapidus, From Kepone-Contaminated Eggs, A. Thomas Leggett
The Development Of Blue Crabs, Callinectes Sapidus, From Kepone-Contaminated Eggs, A. Thomas Leggett
Dissertations, Theses, and Masters Projects
No abstract provided.
A Study Of The Circadian Rhythm And Pre And Post Puberty Concentrations Of Serum Prolactin In Male Prairie Deermice (Peromyscus Maniculatus Bairdii), Michael Kevin Thompson
A Study Of The Circadian Rhythm And Pre And Post Puberty Concentrations Of Serum Prolactin In Male Prairie Deermice (Peromyscus Maniculatus Bairdii), Michael Kevin Thompson
Dissertations, Theses, and Masters Projects
No abstract provided.
The Evolutionary And Ecological Significance Of The Clutch Size Of The Osprey (Pandion Haliaetus), Christopher Hall Stinson
The Evolutionary And Ecological Significance Of The Clutch Size Of The Osprey (Pandion Haliaetus), Christopher Hall Stinson
Dissertations, Theses, and Masters Projects
No abstract provided.
Changes In Amount And Composition Of Gelatin From Development Stages Of The Scyphozoan Jellyfish, Chrysaora Quinquecirrha, Janet Murphy Quensen
Changes In Amount And Composition Of Gelatin From Development Stages Of The Scyphozoan Jellyfish, Chrysaora Quinquecirrha, Janet Murphy Quensen
Dissertations, Theses, and Masters Projects
No abstract provided.