logo

Category : Chemisty

No Linkage of Yellow Body and Sepia Eye Mutations in Drosophila: Yellow Body X-linked and Sepia Eye Autosomal

Written by Brandon Abstract: The theory of independent assortment was first discovered by Gregor Mendel; however when the idea of genetic inheritance was revisited by Thomas Morgan, it was determined that it was not universally true of all alleles and for all organisms. Morgan’s experiments with Drosophila showed a difference in trait inheritance. Chromosomal Theory of Inheritance suggested that multiple genes are inherited in a linked fashion that is predictable and observable. This study focused to determine linkage between the […]

Synthesis of 5-Methyl-5-Hexen-2-one using the Organic Syntheses Method

Written by Nicole   Introduction The purpose of this paper is to compare experimental methods in order to acquire the optimal procedure to synthesize the compound 5-Methyl-5-hexen-2-one. Procedures will be scrutinized according to their cost and time efficiency, as well as the complexity and thoroughness of procedure in producing product at a high yield.  A detailed stepwise mechanism is indicated for 5-methyl-5-hexen-2-one.  Also indicated in this paper are two methods that produce the product from experimental procedures: “Stereoselective Total Synthesis […]

Diels-Alder Reaction: Experiment

Written by Vijay In this experiment, cyclopentadiene and maleic anhydride were reacted in solution to produce a single organic product in crystal form. Cyclopentadiene is composed of a five-carbon ring where two of the carbon-carbon bonds of the ring are double bonds; the double bonds are separated by a single σ bond, making the double bonds conjugated. Maleic anhydride is has a five-membered ring with ring’s oxygen atom bonded to two acyl groups (R-C=O), and where the R-group is the […]

Halogen Reactions

Written by Sean Purpose – Exploring Halogen Reactions Through this experiment the electronegativity of several Halogens will be determined through attempted chemical reactions. Electronegativity is the power of an atom to pull electrons toward itself, which usually forms a bond with another atom and thus creates a molecule. If this molecule is polar, that is, that one of the atoms attracts electrons more than the others; it will be soluble in polar liquids and the same with nonpolar molecules and […]

Preparation of 1-Bromobutane and 2-Chloro-2-Methylbutane Using Sn2 and Sn1 Mechanisms

Written by Katrina Abstract: Haloalkanes are being used every day in the industry: as household solvents reagents, anesthetics, freons, and pesticides to name a few. These haloalkanes can be produced through nucleophilic substitution reactions also known as SN2 and SN1 reactions and it was through this that the haloalkanes 1-bromobutane and 2-chloro-2methylbutane were produced. An SN2 reaction was first carried out to synthesize 1-bromobutane from 1-butanol with the help of hydrobromic acid. The obtained percent yield of the product 1-bromobutane […]

High-Efficiency Transformation of Yeast

Written by Isreal Introduction: The CDC42 gene or Cell Division Control 42 gene has homologies in many species ranging from yeast to humans. This gene controls and influences many pathways that are important in the formation of many proteins. One of the great things about CDC 42 is that we can use a mutated strain and, through transformation, actually change the genetic material within the cell (Chapoel, et al 2010). This would cause complementation within the cell. Transformation is the […]