Drosophila melanogaster Essays

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

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

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

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

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

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)

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

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

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

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 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

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

Genetics is all around us. One may observe heredity in many different forms. For example, Laboratory Three: Dihybrid crosses using Drosophila melanogaster, was assigned to observe Fruit Fly phenotypes. Around the 1920s, Thomas Hunt Morgan experimented with this same species to detect mutations and discovered X-linkage, various recessive and dominant phenotypes, and also that genes are located on chromosomes (Klug, et al. 2013). In the experiment that took place over the course of a few weeks

Zebrafish advantages: handling, breeding and imaging techniques Zebrafish are one of the most important vertebrate model organism in biological research They are small (2-4 cm long) and robust; one pair of zebrafish can lay between 100-200 eggs in a single mating every week. The embryos after fertilization develop externally and the growth rate is very fast. For a large part of the development (till the larval stage) they are transparent and this is a great advantage for imaging during development

Drosophilia melanogaster, known as the common fruit fly, is tan or light brown in color and usually have red eyes. The common fruit fly size is 3 to 4 mm (millimeters) and has a life span of 14 days. Drosophilia melanogaster is often favored amongst culture breeding due to how fast they breed and how short they live. It should also be noted that this specific specie also carry recessive genes that can cause an offspring to grow without wings which means that fruit fly cannot fly. Also, if a fruit

I did some more research into mathematics specifically in nature (biological and otherwise), and it turns out that a lot of nature is the result of mathematics. Here are some examples: (once again, the links are cool images) The Golden Ratio is responsible for the spiral patterns in the nautilus' shell, the aloe plant, the number and pattern of petals on flowers, sea shells, hurricanes and galaxies, and the shape of an egg and even the human face and hands have their bases in the golden ratio. The

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

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

Based on the gel electrophoresis of genomic DNA of wild type and eyeless flies shows only DNA in wild type and not in eyeless (Figure 1). The reason to explain why eyeless did not show any DNA on the gel is the preparation of samples for PCR. The wrong amount of reagents might have been added or left out. Another case is no DNA was collected from eyeless flies. Since there was no DNA for eyeless, another group’s eyeless DNA was used throughout the lab. For Figure 2, Wild type shows both blue and

The Inheritance of Genetic Traits in Fruit Flies Introduction: The purpose of this experiment is to learn how to culture fruit flies and to study the inheritance of traits via genetics in the fruit flies we culture. Fruit flies are a common, small fly found around unripe or rotted fruit, hence the name (Geiger). This species of fly has commonly been used in many studies associated with genetics due to the lack of effort required to care for them, their short life cycle, and their easily distinguishable