Drosophila melanogaster Essays

primary literature, briefly summarize two studies that have used Drosophila as a model organism in a genetic or evolutionary context (Twenty Five Marks). The aggressive behaviour of the Fruit flies (Drosophila melanogaster) have been observed in a study to see the reaction of various neurobiological factors. Several techniques are used in the study including behavioural and genetic techniques. In the brain of the Drosophila melanogaster, neurotransmitters dopamine and octopamine as well as mushroom

Introduction Drosophila melanogaster has been studied by scientists for over a decade, since the first use in 1901 by a Harvard group led by William Castle's (Jennings, 2011). The main reason the Drosophila melanogaster was used is the fact that they only have four chromosomes, making the mapping of their DNA more manageable, compared to organisms like humans who have twenty-three chromosomes (Elgin, 2018). Drosophila melanogaster also have short life span and larval phase, can be reasonably easy

Title: The purpose of the experiment is to analyze Drosophila melanogaster cDNA Sequences in order to find homologous proteins in humans of which can lead to a model for human disease. Introduction: Drosophila melanogaster, the common fruit fly, is a very advantageous organism to work with in the laboratory, for it is a very useful model for human disease. Much is known about these organisms since have been studied for over 100 years. Drosophila are very easy to culture and breed due to their small

Introduction: The purpose of this lab was to figure out which mutation in parental male Drosophila melanogaster caused the bright red phenotype. This was done by linkage analysis. The D. melanogaster is commonly known as a fruit fly. The Drosophila is a model organism meaning the organism is ideal for studying genetics due to its short lifespan and ease of care. The Drosophila life cycle can be completed within two to three weeks. The life cycle starts as an egg and goes through three instar phases

In this experiment, we observe and characterize the phenotype for white eyes (w-) in Drosophila melanogaster in order to determine the pattern of inheritance of the gene, which causes it. As well as this, we attempted to determine the mechanism for this mutation via literature review. The wild-type (w+) phenotype for eye color in D. melanogaster is red, with our mutants being white-eyed. Our initial hypothesis was that white eyes was an X recessive trait based on conclusions from experiments conduced

The model organism used in the O’Sullivan lab: The O’Sullivan lab has opted to use the fruit fly Drosophila melanogaster in order to model HSP. A model organism in which there is a very well conserved homologue to ARL6IP1, CG101026 (Fowler and O’Sullivan 2016). The fruit fly has a number of advantages associated with it as a model organism as for one Drosophila melanogaster has a short life cycle, a rapid generation time and produce a large number of offspring meaning experiments can be performed

The meaning of Arthropod is an invertebrate animal that has a segmented body, jointed limbs, and commonly has a chitinous outer shell. This Phylum is specific to insects, spiders, arachnids, crustaceans, and myriapods. Drosophila Melanogaster is a species that comes from Phylum Arthropod. The common name for this species is fruit fly. If you are not sure what a fruit fly is, it is a 3mm long fly that is usually seen around spoiled fruit. Why are fruit flies even significant to biologists? They are

The species Drosophila Melanogaster was used to test the effects of evolution when it came to selecting against sepia eyed flies. Drosophila Melanogaster or fruit flies were used because of their short reproduction cycle and simplicity. They reproduce and reach maturity fast. In the wild there are two main eye colors for fruit flies red eyes and sepia eyes or dark eyes. The sepia eyes (r) are known to be recessive while the red eyes (R) are dominant. In this lab fruit flies were analyzed for the

Drosophila melanogaster Lab Report Guidelines Title Page (this needs to be its own page as a cover page) Descriptive title Your name Your group number and lab partners name Class Date submitted Introduction (this could easily be 2-3 pages) Background research with in-text citations (should include such things as general info on Drosophila melanogaster, why we use them as a genetic model system, descriptions of the different modes of genetic transmission and how you can tell which one your group’s

Testing Genetic Drift and Natural Selection in Drosophila melanogaster Materials and Methods The materials and methods are from (Welsh and Thompson 2016) Wild-body type (tan) and ebony body type Drosophila melanogaster were prepared before this procedure by chilling the flies to leave them immobilized . Drosophila melanogaster is an ideal organism for this experiment for they can be easily cultured. They can be cultured in less space in a temperature of 21-25(degree Celsius find degree sign)

Black. We hypothesized that Drosophila Melanogaster would prefer dim light over all colors, especially blue and black due to the fact that they have very short wavelengths which are lethal to the flies. However, results from 2 out of our 5 trials did not support the hypotheses. In the initial trial, Dim vs. Dim, we expected an equal number of flies on each side of the chamber due to the same lighting on both sides. Yet, the results proved otherwise, as Drosophila Melanogaster showed a strong preference

Drosophila is a genus of small flies, belonging to the family Drosophilidae, whose members are often called “fruit flies”. One species of Drosophila in particular D.melanogaster, has been heavily used in research in genetics and is a common model organism in developmental biology. The entire genus, however, contains about 1,500 species and is very diverse in appearance, behavior, and breeding habitat. Scientists who study Drosophila attribute the species’ diversity to its ability to be competitive

The basic concepts of transmission genetics is introduced using the dihybrid cross of Drosophila melanogaster to develop an understanding in genetic concepts of how genes are transmitted. The main objective of this experiment was to enhance understanding of the patterns of inheritance in fruit flies (Drosophila melanogaster). A dihybrid cross was set up using a set of F1 generation flies that eventually give rise to F2 generation. The phenotypic ratios of these flies are then analysed namely wild

purpose of this lab is to choose a complex set of traits of Drosophila melanogaster and breed them to evaluate the phenotypes of the offspring created. There was an F1 cross of males and females with different traits and we evaluated their offspring (F2 generation.) The class was given the option of choosing simple autosomal or sex-linked patterns. This lab was performed following the procedure in the College Boards AP Formal Lab #7: Drosophila Genetics. Our results for the breeding were a phenotypic

Abstract The different factors that contribute to the eye pigmentation of Drosophila melanogaster are based on proteins that are likely to influence in the fly's eye pigmentation. The experimental procedure was done to learn more about Mendelian Law of Segregation and to determine whether or not two different fruit fly crosses for the 3:1 phenotypic ratio. In this study, the lab group examined the eye pigmentation of Drosophila melanogaster’s under a dissecting microscope to determine the phenotypes

The purpose of this experiment was to determine if there is natural selection against blind, white-eyed male Drosophila melanogaster, as well as if there is any interplay between selection and drift occurring in populations of different size. This was done by creating and monitoring both small and large populations and placing them in an environment with regular light or complete darkness. It was predicted that natural selection would occur against white-eyed males in the light trials, but would

study the trait of aldehyde oxidase (AO) in fruit flies. Aldehyde oxidase is responsible for catalyzing the oxidation of many aldehydes. The aldox gene controls the amount of AO activity in Drosophila melanogaster. In the first part of the lab, an enzyme spot test will be performed on two different vials of Drosophila to exhibit the AO activity of both vial 1A and 1B. A positive test for AO test will present a blue color, while a negative test will present no reaction. The flies in vial 1A will demonstrate

The mode of inheritance for the four traits of eye shape, eye color, bristle morphology, and body color were studied in Drosophila melanogaster, or commonly known as the fruit fly. Each gene was analyzed through reciprocal crosses of wild type alleles and mutant alleles in the flies. The gene for body color encodes either a honey yellow or ebony color in the fly. It was determined that the honey, which is the wild type, is the dominant allele and the ebony color is the recessive allele. Eye color

Filial crossing of the Dumpy Sepia Dihybrid Mutation in Drosophila Melanogaster does not follow Mendel’s ideal Ratio and The Law of Independent Assortment. Abstract A genetic cross was performed on the Drosophila Melanogaster fruit fly in order to observe the occurrence of transmission genetics in its phenotypic results. The experiment also aimed to determine whether these flies follow Mendel’s Laws of Segregation and Independent Assortment. Wild type female fruit flies were crossed with Dumpy Sepia

Tim Jenkins Brain Story 13 “The Thirsty Fly” Dr. Kroger Psy 375 11-16-16 In Weiner’s “The Thirsty Mind” article (2014), the neurostructures of a fruit fly were analyzed as it related to “thirst”. Kent Berridge has spent decades of his life devoted to the biological reward circuitry that exist. Berridge’s theory of rewards was broken down into 3 subcategories; liking, wanting and learning (Weiner, 2014). Different species have similar responses to a sweet taste: sticking their tongues out, which Berridge