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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P1 P2 Genotype aa Aa Phenotype Wild Curly wing *Wild type allele: a *Curly wing allele: A Punnet Square Cross A P1 P2 a a A Aa Aa a aa aa F1 Genotype aa Aa F1 phenotype Wild type Mutant Phenotype ratio 1 1 Cross B (P2 and P2) P2 P2 A A A Aa Aa A Aa A A F1 Genotype Aa Aa AA F1 Phenogype Wild type Mutant Lethal Phenotype ratio 1 2 0 Theoretically‚ the proportion of the offspring from Cross A should be 1:1‚ and the proportion of the
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the forces are described as concurrent forces. When these forces lie in the same geometric plane‚ the forces are also described as coplanar forces. A single G G equivalent force known as the resultant force FR may replace a set of concurrent forces F1 and G F2 ‚ as shown. This resultant force is obtained by a process of vector addition of the original force vectors and produces the same effect as the combined effect produced by all the original forces. Conversely‚ a set of concurrent forces can be
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EXPERIMENT NO. 4 AIM- Design of V-belt drive PROBLEM- Design a V-belt drive for the following data Driving motor power = 20 kw Driving motor speed = 1440 rpm Driven reciprocated compressor speed = 480 mm Suggest a suitable size and no. of belt required and draw a neat sketch of pulley group no. of fatigue cycle. The centre distance must not exceed 2m. SOLUTION- Given data-
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DESIGN ANALYSIS A. Determination of the capacity of the Hopper The hopper is a truncated square pyramid which serves as the input unit‚ so it was designed to provide smooth supply of moringa leaves into the pulverizing chamber. Considering AMB‚ EMAM=h260+h 30160=h260+h h=60mm therefore the total height H=60+260=320mm. Volume of hopper=volume of large pyramid – volume of small pyramid Volume of pyramid=1/3[a2H- b2h] Where a=320mm‚ b=60mm Volume = 1/3[(3202x320)- (602)(60)] = 10850667mm3
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separated into male and female‚ and then further separated into phenotype. This marked the completion of the P1 generation. The F1 crosses were then begun. They were set up in there different ways. In Cross A‚ F1 females were paired with F1 males. In cross B‚ F1 virgin females were paired with dumpy sepia males. In the last cross‚ Cross C‚ dumpy sepia virgin females were crossed with F1 males. In crosses B and C‚ only virgin females were used. The virgin females used were obtained from the P1 crosses. Dumpy
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almost non-existent. However‚ the Era of Good Feelings was a misnomer because the events that happened during that period of time were inconsistent with its label. Events like the reinstatement of
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