Step 2. Observe adults First, to observe the adults, two capped glass vials containing culture medium and Drosophila from larva to adult stages were obtained. Each of the two vials was carefully observed one at a time for natural and mating behavior.…
Writing Assignment 1: Description of Unknown Mutant Allele Phenotype Subtle differences were observed after comparing all body parts of mutant and a wild type D. Melanogaster. It was discovered that normal venation pattern was disrupted in mutant D. Melanogaster. The phenotype mutation (vein pattern) of D. Melanogaster was identified with a different degree of expressivity in mutant D. Melanogaster; this was achieved by differentiating the single line (longitudinal vein 5) on a wild-type wing which was disrupted. Additionally, few mutants had wings that did not fully extend to them, and also some mutants were unable to fly.…
We hypothesized that curly wing flies would have difficulty courting past the flapping of its wings to create a “love song”. The FraxE flies are model organisms of a mutation that causes mental retardation and various behavioral problems. We did not expect very much courtship at all in this group. Lilli flies were similar to the FraxE model except they had the protein that was lost with the mutation placed roughly 50% back into them. We thought the flies with this mutation would have more courtship then the FraxE but less than the curly wing fly.…
The Spotted Wing Drosophila fly (SWD) is a quickly spreading across the United States of America. As SWD numbers get larger the number of fruit crops gets smaller. Aijun Zhang, a chemist working with the Agriculture Research Service, Invasive Insect Biocontrol, and the Behavior Laboratory in Beltsville Maryland, has found a solution to the SWD problem, Methyl benzoate. Methyl benzoate is emitted by snapdragons and petunias, to attract bees. SWD, unlike bees, is repelled from Methyl benzoate, and can even be killed by Methyl benzoate.…
I was assigned two projects as a summer research student. The first was to create a strain of fruit flies that had a gene coding for a DNA polymerase (pol. theta) knocked out. The second was to document the stages of development of mus-308 knockout embryos through time-lapse microscopy. The latter project was somewhat difficult to complete, as early on the embryos would die prior to reaching the microscope.…
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…
A study conducted in Israel by researchers at Bar-Ilan University shows promising results in the battle of alcohol addiction. Scientist test fruit flies to discover how to pleasure flies without alcohol consumption. The head of the research team, Galit Shohat-Ophir tested flies under the red-light district to see if they were affected by the red-light. This activated a protein, called corazonim (CRZ) located in their abdomen that caused them to ejaculation. As a result, to their exposure the fruit flies ejaculated and did not desire other pleasures, such as liquor spiked with alcohol.…
Fruit Flies Coming Out Of Your Sink? 3 Methods For Getting Rid Of Them Fruit flies can be incredibly annoying to have in your home, with them seemingly appearing out of nowhere. You can try all the usual tricks, such as putting away vegetables and fruits on your countertops or using traps, but that may not do the trick of removing them for good. Chances are that you have overlooked your kitchen’s sink. That food waste that is stuck in the pipe or garbage disposal could be the source of the fruit flies.…
Drosophila Paper Discussion Portion Discussion The hypothesis was supported during the experiment. We originally hypothesized that if parental strains of stock D. melanogaster were mated, the ratios of the phenotypes in the F1 generation would be completely random and follow the laws of segregation and independent assortment. Under such assumption, the 3 genes examined in this experiment would not be linked, and the final observed number of F1 flies with each phenotype would equal the expected number under the null hypothesis. The expected number in each case was half the total number of flies for phenotypes that were possible in the offspring based on the parental phenotype.…
Chi square calculation (experimental data, not control data): x2 = (28 - 29)2/29 + (30 - 29)2/29 = 1/29 +1/29 = 2/29 = 0.0690 0.069 < 3.834, assuming p = 0.05 The null hypothesis should be accepted. Analysis: We are unable to reach a conclusion regarding the effect of light on the fruit flies’ behavior.…
Although, there was an error, the mutation was most likely autosomal recessive. Drosophila melanogaster, a type of fruit fly, is most commonly found in the wild, but also a great model organism in the laboratory.…
A second experiment to test the importance of the different genes used olfactory conditioning. First they paired the MCH or OCT with a shock and then the flies were placed in a T-maze. Here, they were made to choose between two different odors. The performance index was then…
According to this article by researchers from the University College London, mismatched light and heat levels can disrupt the body clock function. By using an experimental research, the fruit flies can help determine the effects of different light and heat levels to behavior. The fruit flies were placed in a control environment that exposed them to 12 hours of light and warmth followed by 12 hours of dark and cold. This controlled environment was the baseline to see the after effect when mismatch light and heat levels was presented. According to their study published in Cell Reports, the fruit flies exposed by a slight time lag showed lower body effect than the set of fruit flies that were exposed to a large time lag.…
The Drosophila melanogaster has been a novel model organism for researchers for over a century studying various species at a molecular level. Because Drosophila has a short life cycle and easy to manipulate advocates Drosophila as a good model organism. The insight into molecular mechanisms in studying this species is why it has been used for such a long period. This organism is easy to manipulate to observe the changes over time, and because of this the variability among these species allows for direct comparisons to a multitude of organisms from a species that is not as complex at a molecular level (Jennings 2011). Starting with embryonic development, scientist have studied how genes direct the development of a single cell embryo to a mature…
Traits are inherited in a variety of ways ranging from dominate or recessive and sex-linked or autosomal. Using different model organism, scientists are able to study inheritance patterns of many generations in a short period of time. Different model organisms are utilized in many different ways. In the case of this experiment, a model organism must have a rapid rate of maturation and reproduction. The use of Drosophila (fruit fly) was chosen for its fast gestation period and ease of trait comparison between generations (Cartier and Stewart, 2000).…