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Articles 1 - 8 of 8
Full-Text Articles in Biology
Investigating Large Repeats In The Arabidopsis Thaliana Mitochondrial Genome Using Mitotalens, Megan Gusso
Investigating Large Repeats In The Arabidopsis Thaliana Mitochondrial Genome Using Mitotalens, Megan Gusso
Honors Theses
This lab project explores the complexity of the mitochondrial genome by investigating large genomic repeats and their effect on flowering plants’ reproduction and viability. Mitochondria are the site of cellular respiration to create energy and contain their own DNA. This is counterintuitive because the byproducts of cellular respiration impose a threat of mutation for the stored DNA. The mitochondrial genome differs in size between animals and plants. Plant mitochondrial DNA is larger due to the presence of large, noncoding repeated sequences, and a large amount of DNA of unknown function. These sequences undergo high levels of recombination and rearrangement. The …
Extranodal Tumors And Chromosomal Abnormalities Associated With Non-Hodgkin Lymphoma In T(14;18)-Positive Patients, Alexis Finch
Extranodal Tumors And Chromosomal Abnormalities Associated With Non-Hodgkin Lymphoma In T(14;18)-Positive Patients, Alexis Finch
Honors Theses
Nebraska is mostly an agricultural state with a non-Hodgkin lymphoma (NHL) incidence rate of 20.1 per 100,000 individuals, which is greater than the US incidence rate of 19 per 100,000 individuals. It is possible that the higher incidence rate in Nebraska is due to an increase in pesticide usage. Pesticide exposure is linked to t(14;18), a genetic translocation involving the BCL2 gene that regulates apoptosis. The dysregulation of apoptosis could contribute to the proliferation of NHL. This exploratory study utilized the Nebraska Lymphoma Study Group, which consists of patients with non-Hodgkin lymphoma, Hodgkin disease, or some other neoplastic hematologic disorder …
A Look Into The Physiological Impacts Of Childhood Cancers And Modeling Of Tumor Growth Rate, Erica Steiner, Kimberly Hansen, Marissa Stanton
A Look Into The Physiological Impacts Of Childhood Cancers And Modeling Of Tumor Growth Rate, Erica Steiner, Kimberly Hansen, Marissa Stanton
Honors Theses
Cancer is one of the deadliest diseases present in the world. Children have different reactions to diseases and treatments; thus, it is important to study those reactions specifically in children. Knowing how children are impacted by these factors can be helpful in diagnosis and treatment of cancer. I performed this study by researching the different types of cancer I was interested in and using MATLAB to code for and simulate a growth curve of a brain tumor. I found that there are many different physiological impacts of different cancers in children. As for the modeling, I was able to get …
Social Transmission Of Predator Information Through Referential Alarm Calls Within And Across Species, Carly Trebac
Social Transmission Of Predator Information Through Referential Alarm Calls Within And Across Species, Carly Trebac
Honors Theses
Animals can encode information about a predator’s size, identity, or threat through alarm calls. This can provide referential information that can be used by individuals within and across species receiving the information. Referential alarm calls can encode information through changes in structure or rate of the call, and these variances in their call can elicit different responses, such as fleeing or mobbing, in conspecifics and heterospecifics. We aimed to investigate whether white-breasted nuthatch alarm calls can encode referential information and elicit different responses from conspecifics. Previous studies showed that a related species of nuthatch varies their call rate in the …
Source Of Off-Type Frequencies In Winter Wheat Varieties, Michaela Benes
Source Of Off-Type Frequencies In Winter Wheat Varieties, Michaela Benes
Honors Theses
The enzyme polyphenol oxidase (PPO) is undesirable in most wheat products due to the discoloration it causes. Purifying wheat varieties through selective breeding is the best way at getting rid of PPO in a variety. The variety NW15443 was planted in both a field in McCook, NE, and in a greenhouse in Lincoln, NE. Individual heads were snapped from the field and the greenhouse seed was harvested in bulk. After completing a PPO test of the seed, it was determined that the percentages of off-type frequencies from the field seed and the greenhouse seed were 11% and 3.6%, respectively. Using …
Bacteriophage That Infect Gordonia Species Show Varying Host Specificity And Infection, Lindsay Birge
Bacteriophage That Infect Gordonia Species Show Varying Host Specificity And Infection, Lindsay Birge
Honors Theses
Bacteriophage (phage) are an incredibly abundant species of virus that infect bacteria. One major characteristic of phage is their small host range- many phage are known to infect only one or a few hosts. This phage and host relationship has led to phage therapy recently becoming highlighted as a possible alternative to traditional antibiotics in light of the growing antibiotic resistance crisis. The study of phage host specificity has risen in line with this concept, as a phage with a more extensive host range can provide more opportunities for use as an antibiotic. Samples of phage previously isolated on a …
Can Gdp Be Predictive Of Fertility Rates In Sweden?, Hannah Coleman
Can Gdp Be Predictive Of Fertility Rates In Sweden?, Hannah Coleman
Honors Theses
Fertility rates in a country vary and can be influenced by numerous different aspects of an individual’s life and the society in which they live. One aspect that may influence fertility rates at the national level is the gross domestic product (GDP). GDP is an indicator of a country’s economic productivity. Because fertility is linked to both economic development and individual resources, GDP may be a useful indicator of fertility rates. If so, knowing or predicting GDP could be used to project the fertility rates of a population years into the future. To determine if a reasonable connection between GDP …
A Mathematical Model Of Pancreatic Cancer Growth And Response To Treatment, Allison Cruikshank
A Mathematical Model Of Pancreatic Cancer Growth And Response To Treatment, Allison Cruikshank
Honors Theses
Pancreatic cancer is one of the leading causes of death due to cancer in the United States. Analyzing the effects of radiation is extremely valuable in determining when a patient is allowed surgical resection, which is, presently, the only potentially curative treatment for pancreatic cancer. This study examines pancreatic tumor growth and shrinkage to predict tumor response and change of resectability for pancreatic cancer patients undergoing radiation therapy. This is done using ordinary differential equations as a mathematical model. Mathematical models have increasingly been applied to various biological systems/processes to analyze the principles involved. In our project, a population dynamical …