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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
Understanding The Relationship Between B Chromosomes And Nondisjunction In Drosophila Melanogaster, Ayushi Patel
Understanding The Relationship Between B Chromosomes And Nondisjunction In Drosophila Melanogaster, Ayushi Patel
Honors Scholar Theses
B chromosomes are supernumerary, heterochromatic genetic elements that are found in hundreds of different plant and animal species. Recently, B chromosomes were discovered in a stock of Drosophila melanogaster and are carried at a high copy number of 10-12 B chromosomes per cell. B chromosomes are not known to carry any active genes, but when placed in a wild-type genetic background, they cause a significant increase in the frequency of chromosome 4 missegregation during meiosis. This project aimed to understand the relationship between a female’s B chromosome copy number and how often she passes on too many (or too few) …
Identifying The Cell Composition And Clonal Diversity Of Supratentorial Ependymoma Using Single Cell Rna-Sequencing, James He
University Scholar Projects
Ependymoma is a primary solid tumor of the central nervous system. Supratentorial ependymoma (ST-EPN), a subtype of ependymomas, is driven by an oncogenic fusion between the ZFTA and RELA genes in 70% of cases. We introduced this fusion into neural progenitor cells of mice embryos via in utero electroporation of a non-viral binary piggyBac transposon system containing ZFTA-RELA. From preliminary data in the LoTurco lab, inducing the expression of ZFTA-RELA into different neural progenitor cells produces tumors of varying lethality and cellular composition. To define the cellular composition and subclonal diversity of ST-EPN tumors, we used single cell RNA-sequencing to …
Identifying The Cell Composition And Clonal Diversity Of Supratentorial Ependymoma Using Single Cell Rna-Sequencing, James He
Honors Scholar Theses
Ependymoma is a primary solid tumor of the central nervous system. Supratentorial ependymoma (ST-EPN), a subtype of ependymomas, is driven by an oncogenic fusion between the ZFTA and RELA genes in 70% of cases. We introduced this fusion into neural progenitor cells of mice embryos via in utero electroporation of a non-viral binary piggyBac transposon system containing ZFTA-RELA. From preliminary data in the LoTurco lab, inducing the expression of ZFTA-RELA into different neural progenitor cells produces tumors of varying lethality and cellular composition. To define the cellular composition and subclonal diversity of ST-EPN tumors, we used single cell RNA-sequencing …
The Genetic Influence On Subjective Well-Being: A Review Of The Current Knowledge On The Role Of Genetics On Our Sense Of Subjective Well-Being And The Implications It Has For Future Research In Improving Well-Being At Both A Population And Individual Level., Abhishek Gupta
Honors Scholar Theses
This thesis project explores the genetic underpinnings of one of the most cherished attributes in the world, well-being.1 Specifically, it attempts to understand the influence of the genome on subjective, or experienced, well-being. An investigation was conducted into current literature concerning both the structure of measurement devices of well-being as well as association studies to determine the scope of the correlation that exists between the genome and well-being and identify genetic findings of interest. Ultimately, being able to provide evidence of causality between the genome and sense of well-being at this iteration of well-being and genome research is limited, …
Genetic Analysis Of Flower Color Differences Between A Hummingbird-Pollinated And A Self-Pollinated Monkeyflower (Mimulus) Species, Caitlin Foster
Genetic Analysis Of Flower Color Differences Between A Hummingbird-Pollinated And A Self-Pollinated Monkeyflower (Mimulus) Species, Caitlin Foster
University Scholar Projects
Flower color plays an important role in pollinator discrimination and speciation. Understanding the genetic contributions to flower color differences between two closely related species, Mimulus cardinalis and Mimulus parishii, can improve understanding of how they developed different pollination syndromes and diverged from a recent common ancestor. M. cardinalis is hummingbird-pollinated and has large, bright red flowers while M. parishii is self-pollinated and has small, pale pink flowers. An F2 hybrid population between these two species was created to establish a platform for analysis of the genetic architecture controlling the differences in anthocyanin pigmentation. Statistical analysis of anthocyanin concentration distribution …
Confirming World-Wide Distribution Of An Agriculturally Important Lacewing, Chrysoperla Zastrowi Sillemi, Using Songs, Morphology, Mitochondrial Gene Sequencing, And Phylogenetic Reconstruction, Zoe Mandese
Honors Scholar Theses
The Chrysoperla carnea-group of green lacewings is a cryptic species complex. Species within the group are morphologically similar, yet isolated from one another via reproductive mating song. Chrysoperla zastrowi, a species within the carnea-group, is currently described with a distribution ranging from South Africa to the Middle East and India. However, recent collections of carnea-group lacewings from Guatemala and California were preliminarily identified as Chrysoperla zastrowi based upon similarities in their vibrational courtship songs. This analysis aims to place six specimens, collected by collaborators in Guatemala, Armenia, Iran, and California, into a pre-existing phylogeny of the …
Sequencing And Analysis Of Centromere Protein B In Wallaby And The Rapid Evolution Of The Centromere, Alexander Tedeschi
Sequencing And Analysis Of Centromere Protein B In Wallaby And The Rapid Evolution Of The Centromere, Alexander Tedeschi
Honors Scholar Theses
Using a combination of Sanger sequencing and RNA-seq data, this project aims to determine the nucleotide and amino acid sequence of Centromere Protein B (CENP-B), an important protein involved in the assembly of the kinetochore protein complex at the centromere, in several species of marsupials, specifically wallabies. Despite their recent evolutionary history, these species have been shown to have surprisingly divergent centromeric DNA sequences. Through comparative analysis of these sequences, this project, along with analysis of several other CENPs, aims to determine if this divergence extends to the proteins closely associated with these sequences and possibly even further into the …
Identifying New Genes Involved In Centromere Establishment, Megan Boyer
Identifying New Genes Involved In Centromere Establishment, Megan Boyer
Honors Scholar Theses
The centromere is a site on the chromosome that mediates accurate cell division by serving as a platform for kinetochore assembly, and microtubule attachment during cell division. Errors in the process of chromosome segregation can contribute to genetic irregularities, such as those seen in cancer and congenital defects. Our lab uses the ectopic centromere as a tool to discover what proteins may be involved in centromere establishment, defined as the deposition of CENP-A at the locus. We use the lacO/LacI system within Drosophila S2 cells that contain a CAL1-GFP- LacI transgene and an integrated lacO array to study the ectopic …
An Examination Of The Phylogenetic Diversity Of Green Algae (Chlorophyceae) That Symbiose With Spotted Salamanders (Ambystoma Maculatum) In The Egg Stage., Crystal Xue
Honors Scholar Theses
In 1909, the species Oophila amblystomatis Lambert ex Wille was described for green algae that symbiose with salamanders in the egg stage (Wille). There are two hypotheses about the source of algae: 1) that algae enter from the surrounding water once the egg clutch is laid in a pond, and 2) that they are acquired from the maternal reproductive tract. We developed a third hypothesis developed to account for the salamander reproductive cycle. Male salamanders lay spermatophores, which are protein-filled capsules, on plant matter in and around ponds. Spermatophores are exposed to the environment before use by females in internal …
In Vitro Characterization Of Avian Influenza Virus Isolates With A Truncated Ns1 Gene Segment, Aaron Dick
In Vitro Characterization Of Avian Influenza Virus Isolates With A Truncated Ns1 Gene Segment, Aaron Dick
Honors Scholar Theses
Avian Influenza Virus represents a significant threat to the world poultry population, and is a potential threat to humans due to the possibility of cross-species AIV infection. Our approach is to characterize a number of avian virus populations with respect to their content of biologically active particles that include hemagglutinating particles (HAP), plaque forming particles (PFP), interferon inducing particles (IFP), interferon induction-suppressing particles (ISP), defective-interfering particles (DIP), cell-killing particles (CKP) and non-infectious cell killing particles (niCKP) using unique in vitro assays developed for avian influenza virus in the Marcus-Sekellick Laboratory. Specifically, we will use a strain of Avian influenza virus, …