References: Aiu online virtual campus: multimedia version from: mycampuse.aiu-online.com/classroom/page Simple Mendelian Genetics in Drosophila from: math.hws.edu/javamath/ryan/Genetics1.html Fruit Fly Genetics from: www.orkin.com/flies/fruit-fly/fruit-fly-genetics THOMAS HUNT MORGAN (1904) Chromosomes carry genes. FROM: dnaftb.org/10/animation.html (August 31‚ 2011) FRUIT FLY GENETICS:
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one having short wings brown eyes. LR‚ Lb‚ Sr‚ sb. Materials and methods The class was given vials with adult fruit flies of P1 parent generation to look at the traits‚ one generation was homozygous‚ wild type eyes and dumpy wings. The other one was homozygous for sepia eyes and normal wings. These were crossed to yield the F1 generation which is crossed to produce the F2 generation.
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In the early 20th century‚ Thomas Hunt Morgan‚ an American biologist‚ began experimenting on Drosophila melanogaster‚ a common fruit fly. Through his work on D. melanogaster‚ Morgan elucidated the chromosome
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Block 1 January 24‚ 2011 Introduction & Background Fruit flies have made a huge contribution towards knowledge about genetics‚ but for most people‚ they are just annoying insects that are attracted to their fruit. Their scientific name is Drosophila melanogaster‚ and to scientists‚ they have been a key to understand many principles of heredity including sex linked inheritance‚ epistasis‚ multiple alleles‚ and gene mapping. Fruit flies were the first organisms to be used for genetic analysis
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pea plant known to be heterozygous for coat color and one which produced green seeds? 4. From a mating between two normal winged drosophila‚ 27 dumpy winged and 79 normal winged offspring were produced. i. What is the nature of the dumpy winged gene? ii. What were the parental genotypes? 5. In a cross between a dumpy winged fly and one of the parents in the previous question‚ how many normal winged flies would be expected among 120 offspring?
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What is a Dumpy or Automatic Level Let us look at the history of surveying levels. Since the Dumpy level was invented in early 1700’s it has been considered the standard‚ that was up until around the 1830’s when the transit level was invented. Recently the level has changed faster than you can keep up with it‚ but through all this the Dumpy level has remained a reliable back up just in case the modern levels breakdown. A dumpy level‚ builder’s auto level‚ leveling instrument or automatic level is
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mosquito‚ housefly‚ honey bee and butterfly); metamorphosis in insect and its hormonal regulation‚ social behaviour of Apis and termites. (i) Mollusca: Feeding‚ respiration‚ locomotion‚ general features and life history of Lamellidens‚ Pila and Sepia‚ torsion and detorsion in gastropods. (j) Echinodermata: Feeding‚ respiration‚ locomotion‚ larval forms‚ general features and life history of Asterias. (k) Protochordata: Origin of chordates; general features and life history of Branchiostoma and
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inverse shot to find the height of A Block. We levelled the route completely once but swapped around and adjusting and moving the staff and tri pod each time. We all had turns at booking‚ shooting and holding the staff. We adjusted the lenses of the Dumpy Level to suit everyone’s eye so we would be able to eliminate parallax error. We tried to keep our back site and fore site shots at equal distances although we were not able to on St David Street. By keeping our Back Site and Fore Sites at equal distances
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In the 1939 film The Wizard of Oz‚ directed by Victor Fleming‚ Dorothy Gale is in a monochromatic world with her dog Toto‚ which is represented by the sepia tone of the film from the scenes in Kansas. This‚ to her‚ is a monotonous life that she wishes to break away from. When her wishes come true‚ she is whisked way to the vibrant and colorful world of Oz. She eventually is captured by the Wicked Witch of the West and is back in a dull‚ monochromatic castle with minimal vibrant fantasy colors
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How the Loss of Dysbindin‚ a Schizophrenia Susceptibility Gene‚ Affects Sleep Patterns in Drosophila Links between genes and mental disorders have been found throughout science. One mental malady being focused on today is schizophrenia. Schizophrenia is shown to have many sources or possible causes (Maier‚ 2008); however the primary and most studied cause is the link between schizophrenia and the dysibindin gene. Statement of Problem The problem being studied is whether dysbindin is the
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