Drosophila melanogaster

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    INTRODUCTION Drosophila Melanogaster, also known as the fruit fly, is a most valuable organism in biological research that has made significant contributions particularly in genetics and research. It is used as a model organism in research for several reasons viz. Easily handled, sexually dimorphic, cheap and easy to keep large numbers, care and culture requires little equipments and well understood because of its short life cycle of just two weeks and also Entire genome of drosophila…

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    Ebony Lab Report

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    and that the traits would be autosomal, unlinked recessive as well. This hypothesis was also rejected due to the test statistic, 89.95, being larger than the critical value, 7.815. White eyes are found to be a recessive, sex-linked trait in Drosophila Melanogaster; the amount of males having white eyes is significantly higher than the amount of females. In Table 1.2 we see that the amount…

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    In order to be able to determine whether the drosophila Melanogaster fly cross will follow Mendel’s law of Independent assortment in a 9:3:3:1 phenotypic ratio a dihybrid cross was performed of cinnabar brown flies with wild type flies. It was observed that the mutant phenotypes became visible in the second filial generation, thus following the law of independent assortment in the first filial generation. It was also concluded that in the first filial generation the dominant genotypes masked the…

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    Introduction This experiment was designed to examine inheritance patterns in Drosophila melanogaster. Three crosses were set up to examine the inheritance of eye color, body color, and wing shape. The mutant males used in this experiment had: sepia eyes with ebony bodies, white eyes and yellow bodies, or sepia eyes with vestigial wings. All of the females were wild-type. It was also confirmed that the females being used were virgins. This fact was important since female flies can store the…

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    The results show that the protein derived from the Drosophila cDNA sequence and the human protein share the same domain, also, there is a high degree of homology between the two proteins. Therefore, the Drosophila Melanogaster plasmid DNA sequence codes for a protein that has a human homologous involved in human physiology. Researchers are still investigating the function of my protein in Drosophila Melanogaster. However, the function of the homologous protein in human is pretty clear. Indeed,…

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    This review article describes how the mating decision of Drosophila fruit flies is dependent of first the male’s choice to mate and then the female’s choice to accept or reject the male. The article simplifies the mating by the neurobiology behind the male’s choice and then the female’s choice. Furthermore, the article describes how males rely on chemical signals to detect suitable courtship objects and distinguish female flies from males. According to the article, males courtship is based on…

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    Fruit Fly Lab Report

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    six weeks of genetic lab we have been doing an experiment about fruit fly (drosophila melanogaster); we had the opportunity to learn more of how to distinguish between the male and female drosophila; one way that helps me was to look for the sex comb and the size. The purpose of this experiment was to learn more and be able to understand the Mendelian Genetics. We did an actual cross of fruit fly (drosophila melanogaster) such as the monohybrid, dihybrid, X-linked A, X-linked B and three points…

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    Natural Selection Lab

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    The English Peppered Moth and Natural Selection Lab By: Justin Pascual Partners: Nathan Magbitang, Rudy Keyes-Krysakowski, and Glenn Tipold Teacher: Ms. Coopman Date Performed: November 16, 2015 The English Peppered Moth and Natural Selection Lab Purpose The purpose of this lab is to determine how variation in a population can favour survival of a certain trait over multiple generations. Hypothesis It is believed that if there are more speckled moths remaining in the tray at the end…

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    Simpatric Speciation

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    This article caught my eye in the first place because it reminded me of the apple magot fly simpatric speciation that we have studied and understood quite clearly in class. My first response to the whole simpatric and allopatric speciation was clear and it seemed to me that the apple maggot fly speciaton proved this concept. However simpatric speciation with the jays are considerably more unexplanitory, complicated, and as the article indicates, "weird". Katie Langin is the biologist in this…

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    Drosophila

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    inheritance patterns of many generations in a short period of time. Different model organisms are utilized in many different ways. In the case of this experiment, a model organism must have a rapid rate of maturation and reproduction. The use of Drosophila (fruit fly) was chosen for its fast gestation period and ease of trait comparison between generations (Cartier and Stewart, 2000). This allows for scientists to gather multiple generations worth of data in a short period of time to see the…

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