Their progeny (F1) being heterozygous for both mutations displayed only wild type phenotypes. These two mutations in Drosophila are both believed to follow an autosomal recessive pattern of inheritance. Figure 1. Images Drosophila melanogaster with mutations. From left to right‚ mutation in eye color (e)‚ mutation in wing morphology (w). A controlled cross was performed between a true-breeding fly with the eye color mutation and a true-breeding fly with the wing mutation. P1 F1 Figure 2. A pedigree
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The purpose of these crosses was to determine how many genes were involved in the expression of the white eye phenotype. The F2 progeny that resulted from the P1 F1 x F1 cross‚ described in Table 2‚ consisted of four different eye color phenotypes: wild-type‚ white‚ scarlet‚ and brown. The appearance of two new phenotypes‚ scarlet and brown eyes‚ supports the hypothesis that more than one gene is involved and the
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FlyLab: Performing Monohybrid‚ Dihybrid‚ and Trihybrid Crosses 1.c. Based on what you know about the principles of Mendelian genetics‚ predict the phenotypic ratio that you would expect to see for the F1 offspring of this cross and describe the phenotype of each fly. 1.d. Are the phenotypes of the F1 offspring what you would have predicted for this cross? Why or why not? 1.g. What phenotypic ratio do you expect to see in the F2 offspring? 1.h. State your null hypothesis‚ chi-square value‚ degrees
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such as Tripoli‚ Libya‚ and Casablanca‚ Morocco. Smaller nations‚ such as Monaco‚ San Marino‚ and Macau‚ also wanted the prestige and status by being part of racing. Throughout the mid-20th century the sport continued to grow‚ with interest in the F1 races (strongest outside the United States)‚ and interest in Indy car racing strongest within the United States. In the 1950s sports car racing became increasingly popular. By the 1980’s‚ many automobile races were televised‚ and by the 1990s automobile
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CHAPTER 1 INTRODUCTION Competitiveness in today’s marketplace depends heavily on the ability of a company to handle the several important challenges like reducing total supply chain operating cost and reducing lead-times‚ increasing customer service levels‚ and improving product quality. In Figure a typical non integral supply chain is shown‚ in which the goods flow starts as raw materials at natural resources and ends with products at final customers. Raw material winners keep
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CHAPTER – 10 LIGHT-REFLECTION & REFRACTION Light is a form of energy‚ which enable us to see the object. In this chapter we will study the phenomena of reflection and refraction using the property of light i.e. straight line propagation (Light wave travel from one point to another‚ along a straight line). Reflection of Light When the light is allowed to fall on highly polished surface‚ such as mirror‚ most of the light gets reflected. normal Laws of Reflection 1. 2. The angle
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AP Lab Seven Genetics of Organisms Dan Torres AP Biology 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
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studying traits because they are practical‚ small and have a short life cycle of about two weeks (Manning et al‚ 2006). We are demonstrating exactly how Drosophila melanogaster are used to identify mechanisms of transmission genetics in eukaryotes. F1 and F2 generations were obtained by performing simple parental crosses. This was done so that we could determine the mode of inheritance of the genetic trait of eye color . The chi square analysis data showed signs of our observed dating matching almost
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Six male and female adult flies from the F1 generation were placed into the new vials and identified according to the initial P1 crosses and labeled for F1 cross. 19. The failed cross 4 white mutant‚ yellow mutant dihybrid cross was replaced with a dihybrid cross from another lab group and the data for that cross is listed in table 3 as cross 4b. Day 22: 20. Adult flies from the F1 generation were removed from the vials and the F2 generation remained in the
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Truth Discovery with Multiple Conflicting Information Providers on the Web ∗ ∗ Xiaoxin Yin UIUC xyin1@cs.uiuc.edu Jiawei Han UIUC hanj@cs.uiuc.edu ABSTRACT Philip S. Yu IBM T. J. Watson Res. Center psyu@us.ibm.com of information on the web. Even worse‚ different web sites often provide conflicting information‚ as shown below. The world-wide web has become the most important information source for most of us. Unfortunately‚ there is no guarantee for the correctness of information
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