Step 2. Observe adults First, to observe the adults, two capped glass vials containing culture medium and Drosophila from larva to adult stages were obtained. Each of the two vials was carefully observed one at a time for natural and mating behavior.…
Did research on what males and females look like. We observed the frozen flies. On the first week we used fly nap as an anesthetic for the flies and waiting for them to fall asleep. We sexed the flies and put 10 male and 10 female into a tube.…
Writing Assignment 1: Description of Unknown Mutant Allele Phenotype Subtle differences were observed after comparing all body parts of mutant and a wild type D. Melanogaster. It was discovered that normal venation pattern was disrupted in mutant D. Melanogaster. The phenotype mutation (vein pattern) of D. Melanogaster was identified with a different degree of expressivity in mutant D. Melanogaster; this was achieved by differentiating the single line (longitudinal vein 5) on a wild-type wing which was disrupted. Additionally, few mutants had wings that did not fully extend to them, and also some mutants were unable to fly.…
(July 18 2016). Hines, Sandra. “Fruit Flies”. University of Washington.…
Gregor Mendel was a scientist from Moravia who became famous for founding the science of genetics. He worked with cross breeding pea plants, focusing on several different characteristics. When he found that breeding a green and yellow pea plant, always turned out with yellow colored offspring, he ended up making the terms "dominant" and "recessive". Sadly, Mendel's work wasn't found important until decades later in the 20th century, but the things he discovered are still important to us today. There are plenty of different qualities that make a good scientist, but some are more important than others.…
Fruit flies are used in genetics and biological research because they are cheap and be quickly cultured. The use of the Pearson’s fly lab was pre-assigned for the physical experimental procedures to produce results in a limited time frame and reduce the chance of fruit flies contaminating the lab from student error. In order to test the hypothesis, I would observe the F2 generation. The initial parent cross takes approximately two weeks prior to produce the F1 generation. This parental cross would be of a homozygous recessive female (bb) with either a homozygous dominant male (BB) or dominant male with only one allele (XB Y).…
Name: Enrique Vazquez PS ID #: 1259993 BIOL 3311 Fall 2014 Date: October 2, 2014 Gene: Bar TA Instructor Name: Fahmi Mesmar Lab Section: 16258 Writing Assignment 3: Eye morphology of Drosophila melanogaster; Bar mutation effects on ommatidial development of the compound eye. Introduction: Drosophila melanogaster have been used for centuries as model organisms due to their relatively small size as well as their inexpensive and simple diet. Fruit flies also have to ability to reproduce in large amounts considering their relatively short life cycles.…
The data was able to support the statement above because based on the data, there was only two phenotype and they both have normal wing for the male and the female. Fruit flies does…
When compared to the mutant female, mutant male Drosophila expressed several unique differences. The mutant males exhibited smaller and darker colored eyes compared…
Morgan had a very keen sense towards teaching. He is also known as being a successful teacher. He began to research sex linkage on the fruit fly, or Drosophila, in 1909. Before his discovery, the world had thought that the chromosomes were fully formed adults already present in the egg or sperm. People did not have the knowledge to test that theory, until Thomas Hunt Morgan began to research the chromosomes of the male fruit fly (Thomas Hunt Morgan, American Biologist, n.d.).…
For this lab we conducted a population genetics study on the frequency of wild and apterous flies within a small population of fruit flies. The fruit fly Drosophila works well for genetic and evolutionary geared studies because they have a relatively short generation time but are intricate enough to reveal some biological principles that are parallel to many different kinds of eukaryotic organisms. When exposed to artificial selection in laboratory experiments, fruit flies have experienced dramatic changes behavioral and evolutionary traits within ten generations or less (Goldsmith, 1991). It is important to note that wild flies have wings and apterous flies do not. The purpose of artificial selection is for humans to modify species over generations by intentionally breeding two organisms with the objective of acquiring a specific trait.…
In every cross we saw this, but I’m going to use the second cross as my example. In the parental generation, all of the flies were either red eyed females or white eyed males. In the next generation, there were a quarter of each type. This showing that some traits are going to be recessive, and masked when the dominant trait will also be present. We know that the fruit flies follow these patterns, because when we all counted them out, mostly were close the expected amount of each type.…
Throughout the article, this claim is supported by mainly primary sources, including anecdotes about the fruit fly Drosophila, the Human Genome Project, and newspaper articles. One example given…
Fist I ordered a female that had a certain phenotype and a male that had a different phenotype. The female’s genotype was DD when it was Wild type and tr. when it had a black body and sepia eyes. The male’s genotype was dd when it was Vestigial and TR when it had a tan body and red eyes. After mating the flies and waiting “Two weeks” which was really a few seconds for the offsprings to develop, I sorted the flies under the microscope. I then counted the offsprings and how many were Wild type and how many were Vestigial and later with the offsprings of the Drosophila melanogasters that had tan and black bodies with sepia and red eyes.…
Barbara McClintock born on June 16, 1902 to Sara Handy and Thomas Henry McClintock. She resided in Hartford, Connecticut. Her family then moved to Brooklyn, New York in 1908. She graduated Erasmus Hill High School in 1919. She discovered her attraction for genetics.…