Drosophila

Loop formation occurs at high frequency and with such speed that they are hard to analyze. However, in Drosophila, there have been transcription factors that are known to be associated with chromatin looping. The GAGA transcription factor in drosophila initiates gene expression. GAGA factors bind to sequences that are rich in GA/CT sequences where they alter the conformation of the chromatin, allowing the DNA to be accessed by…

limited to, the reduction of life-shortening oxidative damage. Using Honey bee genome sequence it was discovered that there were 38 antioxidants that have all the key components of the enzymatic antioxidants system³. The comparison of the study with Drosophila melanogaster and Anopheles gambiae shows that though there are basic components of the antioxidant system that are conserved, there are important and key species difference in the paralogs³.Some of these key components that are different…

helped to shape the general public’s view of the gene as an all powerful device with the capacity to determine one’s entire behavior. Throughout the article, this claim is supported by mainly primary sources, including anecdotes about the fruit fly Drosophila, the Human Genome Project, and newspaper articles. One example given…

The courtship assay is a valuable test to indicate the physical degeneration Drosophila will experience if mutated to have Parkinson’s. The physical deterioration can be seen as the males attempt two important aspects of courtship, tapping and wing vibration (Greenspan). Males tap females with their legs as a way to identify them…

Whether one believes in a supernatural world or not at all, it is usually safe to say that every person has had an experience that sent chills down his or her spine. That eerie, hair-raising feeling may come from a chilling movie or simply walking around your own, silent house in the dark. No matter what the experience, most people are overcome by this emotion and feel the need to get out of his or her situation as soon as possible. The occurrence of this sensation is seen in the protagonist,…

The aim of the data analysis exercise was to determine genetic relationships between the HSP70 amino acid chains of fourteen different organisms. The data produced was an identification table, a sequence alignment diagram and a cladogram. In cladograms the branches are not representative of the evolutionary time that has occurred. Heat shock proteins (HSPs) are in a class of proteins called molecular chaperones. (Kiang, J.; G, Tsokos. 1998). They are present in both eukaryotes and prokaryotes,…

Contrary to the general notion of scientific as objective, certain scientists and philosophers postulate that bias is, in fact, essential to scientific progress. In examining these contrarians’ claim, I will evaluate the role of bias, specifically gendered bias, in science. To accomplish this task, I shall first provide three fundamental frameworks: the idea of situated knowledge with respect to gender, the difference between “gender” and “sex” (this difference will add clarity to these terms as…

It is hard to believe that dogs, the most popular companion animals in the country, are used as research subjects in laboratories . Researcher’s say thousands of dogs are used for “research, testing, teaching, or experimentation” in the U.S. every year by research facilities, including hospitals, schools, diagnostic laboratories, and private firms in the pharmaceutical and biotechnology industries. Each year the American Kennel Club has more than a million purebred dogs of 150 breeds and…

unique perspective that epigenetics brings to the nature-nurture debate. Find one example that demonstrates how genes can be influenced by environmental factors and include it in your answer. An example of this might be that if the temperature of a Drosophila fly larvae is lowered, an extra set of wings will develop, thus demonstrating that environmental factors can affect gene expression. Be sure to cite the source of your…

Catterson, J. H., Knowles-Barley, S., James, K., Heck, M. M., Harmar, A. J., & Hartley, P. S. (2010). Dietary modulation of drosophila sleep-wake behaviour. PLoS ONE, 5(8), e12062. doi:10.1371/journal.pone.0012062 This study focused on the effects that dietary yeast has on humans and mammals. The study was done with Drosophila Melanogaster which is a fruit fly. This study focused on determining the effects that a diet has on overall sleep. The effects that diet had on metabolism…