Drosophila melanogaster, also known as the fruit fly, is a commonly used model organism in genetics and molecular biology. It has a short lifespan, high fecundity, and a simple genome, making it an ideal subject for laboratory study. In this lab report, we will describe a study in which Drosophila melanogaster was used to investigate the genetic basis of a trait.
The specific trait under investigation in this study was bristle number, which refers to the number of hairs or bristles on the body of the fly. This trait is known to be under genetic control, and previous research has identified several genes that play a role in bristle development. In this study, we sought to identify any additional genes that might be involved in the regulation of bristle number.
To conduct the study, we first set up a breeding population of Drosophila melanogaster in the laboratory. We allowed the flies to mate and produce offspring, and we kept track of the number of bristles on the bodies of the parent flies and their offspring. We then performed a statistical analysis to identify any correlations between bristle number and the genetic makeup of the flies.
Our analysis revealed several genes that were significantly associated with bristle number. One of these genes, called "gene X," appeared to have a particularly strong effect on bristle number. To confirm the role of gene X in bristle development, we conducted a series of experiments in which we genetically modified the flies to either knock out or over-express gene X. We found that flies with a mutated or absent copy of gene X had significantly fewer bristles compared to wild-type flies, while flies with an over-expressed copy of gene X had significantly more bristles.
These findings suggest that gene X plays a critical role in the regulation of bristle number in Drosophila melanogaster. Further research will be necessary to fully understand the mechanisms by which this gene influences bristle development, and to determine whether it has any other functions in the fly.
In conclusion, this study demonstrates the utility of Drosophila melanogaster as a model organism for genetic studies. By using this simple and well-understood species, we were able to identify a gene that plays a key role in the regulation of a specific trait. This information will be valuable for future research on the genetics of bristle development, as well as for other studies on the genetic basis of other traits in Drosophila melanogaster.
Drosophila melanogaster lab report
Along with sex-linkage, epistatic inheritance occurs when multiple genes affect a single phenotype such as eye-color Klug, 2014. Female Drosophila are XX, and males XY. Rendel also discovered a possible preference of ebony flies over vestigial flies when wildtype flies mate; however, he does not have a hypothesis for why this might be Rendell. The cuticle of the 3rd instar hardens into a pupa, and after 6 days in the puparium, metamorphosis is complete and the adult fly forces its way through the anterior end of the puparium. Quickly, the abdomen darkens and the wings expand. BASIC GENETICS The karyotype of Drosophila comprises four pairs of chromosomes, of which three pairs are autosomes and one pair are sex chromosomes.
Drosophila melanogaster Fruit fly Report Sample Essay Example
The staying 25 7 % were of the sepia-eye coloured phenotype with a definite genotype of homozygous rr. A small paintbrush was used to carefully pick up the fly while anesthetized and put it into the vial once looked at. The roles fruit flies play in genetics also help the understanding of genetics in humans and other animals. Normal wings Normal wings No wings white No wings Red eyes White Drosophila Melanogaster Lab Report Identifying unknown phenotypes and determining mechanisms of inheritance of various genes in mutations of Drosophila melanogaster Michael Fisher, Tori Hall, Lindsey Theodore Crosses carried out with Drosophila melanogaster can be used to determine mechanisms that modify ratios of Mendelian inheritance, such as autosomal dominant and recessive inheritance, genetic linkage, and epistasis. The result of the coefficient of selection should be at the rate between 0 and 1. The expected chance ratios were theoretically supposed to hold closely mimicked the experimental consequences ; nevertheless chance is merely that. Finally, because fruit flies are insects, there are no laws about testing them in laboratories unlike other animals Dow, 2012.
Drosophila Melanogaster Lab opportunities.alumdev.columbia.edu
A male has only one X chromosome that is paired with a Y. A reason could be that the flies being identified for phenotype could have been looked at incorrectly or written down wrong. Gene, locus, and allele are often used more or less interchangeably, and this can lead to confusion. Additionally, their simple genome makes recognizing traits and analyzing inheritance especially easy compared to other organisms. After the larval stages, the fly then takes form of a pupa, which develops into the mature adult fly GSA, n.
M Rendel provided some evidence of both of these mutations affecting the reproduction patterns of the mutated flies. Drosophila melanogaster is inexpensive to rear, and can survive easily on food made of a starchy substance such as potato flakes or cornmeal, agar, yeast, and a mold inhibitor. The flies can have white, red, or sepia colored eyes, the bodies can be ebony or grey, and the wings can be long, short, or wingless. Many reasons are that they have a rapid reproduction rate, easy to care compared other animals and less expensive. Introduction In most kitchens the small flies that are found are Drosophila Melanogaster also called fruit fly.
