Drosophila Melanogaster: The Fruit Fly Experiment

It is also possible that a number of other random experimental errors (not mentioned above) affected the results of this experiment (for example the possible death of flies and their offspring due to mites and mould). These random errors could also be overcome by doing a large number of trials using a larger number of flies than used in this experiment.

The parents are both homozygous. The homozygous dominant would represent the wild type. And the homozygous recessive would represent the other fly parent of a different strain. The F1 generation would consist of 100% Wild Type but they would all be heterozygous in carrying the recessive gene.

It was decided that there would be 80 vestigial flies and 20 wild type flies to total to an initial population of 100 drosophila. Next, the flies were anesthetized flies using Fly Nap. The flies were counted out to reach desired ratio, sexing the flies making sure there are equal amounts of males and females to be sure there is ample individuals to allow successful mating. The fly’s food was prepared by taking a frozen rotten banana, cutting it in half, mashing up the banana meat, and mixing yeast into it. The

Introduction: The intention of this lab was to gain a better understanding of Mendelian genetics and inheritance patterns of the drosophila fruit fly. This was tasked through inspecting phenotypes present in the dihybrid crosses performed on the flies. An experimental virtual fly lab assignment was also used to analyze the inheritance patterns. Specifically, the purpose of our drosophila crosses is to establish which phenotypes are dominant/recessive, if the traits are inherited through autosome or sex chromosomes and whether independent assortment or linkage is responsible for the expressed traits.

We started out with three populations; B, D, and G. In order for us to properly create controlled genetic crosses, we had to ensure that all the female flies were “virgins”.

It would be expected that the mutant F1 flies would be heterozygous for the allele responsible for the grounded trait. If two F1 flies were mated, the percentage of flies that would be expected to be wildtype in the F2 generation would be 25% mutants given that the mutant allele (ap) is predicted to be recessive and, leaving 75% to be wildtype (ap+).

Steps 7-11 were repeated to record the phenotype of the F2 generation and number of male or female flies.

The next row(F2 generation), shows us the offspring numbers of a male and female from the F1 generation. Those numbers give us a ratio of 1:1:1:1 of 1 wild male to 1 yellow male to 1 female wild to 1 female yellow. This tells us that there is around the same amount offspring for of each type of fly in the F2 generation.

Heterozygotes, which have the wild type phenotype, have normal sight which gives them the advantage of finding a mate and have a better success with attracting a mate with their courtship song (Kyriacou et al, 1978). The male heterozygous Drosophila had a better advantage at mating than the homozygotes, which were the ebony, and therefore we predict there will be more wild type by the end of the experiment.

we said goodbye and placed them in the fly morgue. We allowed the F2 larval

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

In most kitchens the small flies that are found are Drosophila Melanogaster also called fruit fly. They are often brought in by ripened tomatoes, grapes and other perishable items from the garden. Drosophila melanogaster is a little two winged insect about 3mm long two winged insect that belongs to the Diptera, the order of the flies. The drosophila egg is about half a millimeter long. Fertilization takes about one day the embryo to develop and hatch into a worm-like larva. The larva eats and grows continuously, after two days as a third in star larva; it moults one more time to form an immobile pupa. Over the next four days, the body is completely remodeled to give the adult winged form, which then hatches from the pupal

This experiment looks at the relationship between genes, generations of a population and if genes are carried from one generation to another. By studying Drosophila melanogaster, starting with a parent group we crossed a variety of flies and observe the characteristics of the F1 generation. We then concluded that sex-linked genes and autosomal genes could indeed be traced through from the parent generation to the F1 generation.

An experiment was conducted to test the effects of different carbon dioxide concentrations on the mutations of later generations of Drosophila melanogaster. The model organism, Drosophila melanogaster, commonly known as the fruit fly is used widely in many fields of developmental studies because of its traits of fast reproduction rate, Hox genes, and low maintenance. In addition, the type of Hox genes tested in the Drosophila melanogaster, or the gene most susceptible to alteration from the increased CO2 emissions, are the Hom-C ANTp genes. The subset of genes is relatable to the Hox-A A6 genes in humans. It was hypothesized that an increase in the CO2 concentrations will cause the future generations of fruit flies to exhibit signs of genetic

In this experiment, Drosophila will be used as the organism. We take Drosophila eggs cell during mid oogenesis when the Bicoid and Nanos mRNAs are produced but not localized yet. Then insert Colchicine chemical inside the egg cells. Colchicine prevents the formation of microtubules by inhibiting tubulin, which is responsible for making microtubules. As a result, microtubules will not have formed. If microtubules are responsible for the localization of morphogenic factors, then there will be no binding between bicoid mRna to the anterior microtubules and nanos mRna to the posterior microtubules. The position of the bicoid and nanos mRnas will be randomly distributed. The anterior region of the egg will not bicoid mRna and posterior region will