Drosophila Essays

Drosophila is a fly species that is used in genetics. Since Drosophila goes through life cycles extremely quickly, it is one of the best specimens to use in a multiple generation experiment. The purpose of this experiment is to follow the genetic phenotype of the offspring and determine the genotype, which will most likely predominately be the wild type phenotype with a few recessive traits. To conduct the experiment, we first cross the parents, wild type with sepia eyes and vestigial wings or black

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 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

the 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

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

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

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

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

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

Title: Determining Phenotypes of Crosses Between Drosophila Flies Ameena Ahmed, Ishana Fleurant, Aleksandra Drozdziel, and Chelsea Kornfeld. Abstract The purpose of this experiment is to determine phenotypes of 2 separate crosses between Drosophila flies and compare the outcome to the expected results, which should fit the 9:3:3:1 ratio, set up by the law of independent assortment. A vial with a set of 3 male flies with specific characteristics were mated with 3 female flies with distinct characteristics

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

1. Describe risk assessment in genetic counseling Genetic risk should be estimated as precisely as possible as it is an important component of genetic testing and counseling, and for family decision making. It is always good to take out extra information from pedigree charts and genetic testing as it can improve the accuracy of risk assessment drastically. The risk can be calculated using Bayesian analyses. Among populations, families or individuals within the same family have significantly different

experiment is to identify which DNA mutation is responsible for the mutant brown eye color phenotype in sepia Drosophila melanogaster. To carry out this experiment, DNA sequences were compared and analyzed to make connection between genotype and phenotype through molecular analysis of both wild type control flies and mutant sepia (CMMB, 2018). Background The subjects of this experiment are Drosophila melanogaster’s, which are commonly known as fruit flies. They are model organism’s for genetical experiments

method, the traits of the males and females were observed. 7 red winged male and 7 red winged female, F1 generation flies were selected from the F1 generation. The medium for the next batch of flies was made by pouring 10 ml of formula 4-24 Instant Drosophila Medium to a clean vial and adding 10 ml of tap water, 4 grains of yeast and a strip of netting to crawl on when awake. The selected 14 fruit flies were transferred into prepared vials. The vials were marked and labeled and stored in an average temperature

In this experiment Drosophila melanogaster (fruit fly) were used. To begin with the lab, four virgin females with mutant genotype for yellow body color, crossveinless, and forked bodies were mated with genotype (y cv v f / y cv v f). Then these females were crossed with six males with all wild-type genotypes, which can be abbreviated as (+ + + / Y). During the first week of experiment the flies were anesthetized and viewed under dissecting microscope. Then the flies with above characteristics were

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)

work because you can discover which mutations are dominant and recessive. They have very short reproductive cycles, making it ideal to track their generations rather than organisms with much slower cycles. The average cycle of the reproduction for Drosophila melanogaster is 8-14 days, which allows the observer to find multiple generations’ traits in a short period of time. Additionally, it helps that the females reproduce a lot of offspring, making data points and predictions more accurate. Due to the

vs. 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