The Fruit Fly : Drosophila Melanogaster Essay

If the abundance and distribution of different quality food patches are equal, the predator will forage in the most profitable patch in order to optimize foraging. The flies appear to be foraging optimally in treatment 2 of Mini Experiment 1. The goodness-of-fit test yielded significant results from an expected 50:50 ratio of red to blue abdomens, indicating that the flies have preference for the most profitable 400 mM SS, as opposed to feeding on any patch they encounter. In treatment 1, the statistical results yielded insignificant results, which conflicts with treatment 2, however this may be due to small sample size, or not enough time for flies to

In this experiment we tested to see what the offspring of an unknown cross of an F1 generation would produce. After observing the F2 generation and recording the data we found some of the Drosophila showed mutations, two in particular. The mutations were the apterus wings, and sepia eyes. After collecting our data through observation, a Chi-test was conducted resulting in a Chi-value of 5.1 and a p-value of .2. Since the p-value was greater than 0.05, there was no significant change in the data. This proved that the Drosophila flies still followed the Mendelian genetics of a 9:3:3:1 ratio.

DROSOPHILA CULTURE We will study basic principles of Mendelian inheritance with the use of the fruit fly, Drosophila melanogaster [the name means “black-bodied fruit-lover”]. Drosophila was one of the first organisms to be studied genetically: its small size, short life cycle (10 ~14 days at 25oC), high reproductive rate (an adult female can lay 400-500 eggs in 10 days), and ease of culture and genetic manipulation have made it perhaps the best understood animal genetic system. Many different species, and a large number and wide variety of naturally-occurring and artificially-induced genetic variants are available. The partial genetic map in Appendix B describes the location of all the mutations used in

Comparatively, sugar is not necessarily essential to human survival. It has other draws for humans though, due to the addictive effects that it has, and its ability to sweeten even the blandest foods. Although sugar has been present in diets before hand, “by

Environmental conditions are sometimes appropriate for the evolution of numerous species from a common ancestor. Evolutionary, or adaptive, radiations happen when a large number of species descend from one lineage. This phenomenon usually occurs when a population of one species colonizes an area with many available ecological niches and when the rate of speciation is greater than the rate of extinction in a given area. Adaptive radiations have historically taken place after mass extinctions and on newly formed island archipelagos, because these incidences create conditions where new species can fill open ecological niches. Unlike the mainland, ecological niches are available on new island systems. These island species adapt to new environments

19) Collect 5 males and 5 females of the F₁ generation and place them in the vial to become parents of the F₂ and seal it with another plug.

Fruit flies with normal wings have a higher population and greatly outnumber the population of fruit flies with dichaete or vestigial wings.

The Drosophila melanogaster is one of genetics most studied organisms. This is due to the Drosophila melanogaster being an excellent model organism. The Drosophila melanogaster has a short lifespan and is genetically similar to humans (Adams 2000). This experiment had three major goals. The first goal of this experiment was to determine which eye colors, body colors and wing type are dominant or recessive. The second goal was to determine if the gene for eye colors, body colors and wing type are on an autosomal or a sex chromosome. The third goal was to determine if eye colors, body colors and wing type are physically linked or independently assorting (Morris and Cahoon). First

The major topic of this experiment was to examine two different crosses between Drosophila fruit flies and to determine how many flies of each phenotype were produced. Phenotype refers to an individual’s appearance, where as genotype refers to an individual’s genes. The basic law of genetics that was examined in this lab was formulated by a man often times called the “father of genetics,” Gregor Mendel. He determined that individuals have two alternate forms of a gene, referred to as two alleles. An individual can me homozygous dominant (two dominant alleles, AA), homozygous recessive, (two recessive alleles, aa), or heterozygous (one dominant and one recessive

Drosophila melanogaster were studied to test whether evolution occurred in the population by analyzing the genotype and allele frequencies for 7 weeks. If evolution was occurring, then the aforementioned frequencies would change instead of remaining constant as they would if no evolution was occurring. The hypothesis of this lab is that evolution will occur due to the violation of three Hardy-Weinberg principles. This lab was carried out using 20 flies to start, 5 each of male and females that were homozygous ebony and wild type. New culture vials were made every other week when the flies were scored. On alternate weeks, the adults were transferred to a fly morgue. The results showed that the ebony allele frequency increased and the wild type

Based off the results in the blast lab the species that is most commonly related to the fossil is the Gallus Gallus other wise known as the chicken. The chicken has a score of 10,129 E value of 0.0 meaning that they are very close in alignment overall. This species would be located on the cladogram around the bird mark where the student actually placed their hypothesis. The gene sequence is at its maximum with a score of 10,129. The species that was the next similar was the Drosophila Melanogaster commonly known as the fruit fly. The fruit fly has a score of 4,419 and an e value of 0.0, which means that they were somewhat close and shared some characteristic but not nearly enough as the chicken did with the fossil. The fruit fly would be located

True flies are insects of the order Diptera (from the Greek di = two, and ptera = wings). The most obvious distinction from other orders of insects is that a typical fly possesses a pair of flight wings on the mesothorax and a pair of halteres, derived from the hind wings, on the metathorax. (Some species of flies are exceptional in that they are secondarily flightless.) The only other order of insects bearing two true, functional wings plus any form of halteres are the Strepsiptera, and in contrast to the flies, the Strepsiptera bear their halteres on the mesothorax and their flight wings on the metathorax.

Drosophila Melanogaster is a fruit fly that is commonly used for genetic studies (reference 2). It is an excellent organism for genetic studies because it is small, inexpensive and easy to culture. It occupies little space, and requires simple food (reference 3). Also, it completes its life cycle in about 10-14 days at 25ºC and It produces large numbers of offspring (reference 3).Moreover, it has abundance of heredity variations, and it has a small number of chromosomes which are easily located in the large salivary gland cells (reference 3).There are four important stages in a Drosophila's life cycle consist of the egg, larva, pupa, and adult. Both Drosophila male and female have noticeable features that distinguish them apart.

Introduction: The Drosophila project was fundamentally conducted to determine potential regulators of the wingless pathway in Drosophila Melanogaster. All the experiments in this project were used to establish two things. Firstly, the location of the transposon insertion and secondly, the effect the genes near the transposon insertion had on the wingless pathway.

The Bactrocera Tryoni common name is the Queensland Fruit Fly. This insect is located from in various part of Austrulia such as Queensland, New South Wales, and East of Victoria (www.agriculture.vic.gov, N/A). The Queenland Fruit Fly total life cycle requires three weeks in the summer and two months in the fall (State of Queensland Department of Agriculture and Fisheries).