Internal Assessment | | A. SIMULATED BREEDING EXPERIMENTS WITH DROSOPHILA B. PROBABILITY AND MENDELIAN GENETICS IN PEA PLANTS | | Contents Part A Raw Data…………………………………………………………………………………………………………………...........................1 Processed Data……………………………………………………………………………………………………………………………………2 Conclusion…………………………………………………………………………………………………………………………………………..3 Part B Raw Data……………………………………………………………………………………………………………………………………………..4 Processed
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Liquid Chromatography Purpose: The purpose of this lab was to separate substances based on their polarity by using liquid chromatography. Data Table: Red Dye Blue Dye Run#1 Run#2 Run#3 Run#1 Run#2 Run#3 Start of Band(mL) 1.50 2.20 1.00 2.70 3.00 2.00 End of Band(mL) 2.70 3.00 2.00 6.40 5.50 6.00 Beaker Eluant Observations 1 H2O White powder 2 5%isopropyl Red powder 3 28%isopropyl Blue powder 4 70%isopropyl Oily residual Calculations: W = Vend – Vstart
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Lab#3 Mendelian Inheritance in Drosophila Lab Report 1 In this experiment we are investigating the strength of the ratios discovered by Gregor Mendel in both the monohybrid and dihybrid cross. The ability to test these ratios stems from the use of Mendel’s law of segregation which states that during meiosis allele pairs will separate in gametes so one of each allele is present in a gamete. (Garey‚ et al‚pg 8-13) These single alleles are then combined with the other parental gamete forming
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INTRODUCTION TO DROSOPHILA GENETICS DROSOPHILA CULTURE We will study basic principles of Mendelian inheritance with the use of the fruit fly‚ Drosophila melanogaster [the name means “black-bodied fruit-lover”]. Drosophila was one of the first organisms to be studied genetically: its small size‚ short life cycle (10 ~14 days at 25oC)‚ high reproductive rate (an adult female can lay 400-500 eggs in 10 days)‚ and ease of culture and genetic manipulation have made it perhaps the best understood animal
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The Frequency of Mutations among Second Generation Drosophila melanogaster INTRODUCTION This experiment involved observing and comparing the relative frequencies of inherited dominant and recessive genes in a population using the common fruit fly Drosophila melanogaster. In this experiment‚ we demonstrate how dominant genes are selected over recessive genes (Mendel’s Law of Independent Assortment). Hypothesis: If we cross two heterozygous individuals‚ our observed offspring in the second
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Jane Elliott’s Blue Eye/Brown Eye Experiment Jane Elliott’s Blue Eye/Brown Eye Experiment is one that many teachers would be scared to try. At the time‚ the experiment was smartly planned; it took place the day after Martin Luther King Jr. was shot. Segregation had been a topic fought over for centuries‚ but kids didn’t even realize that they were being racist. Especially for a small Iowa town‚ Jane Elliott’s experiment would have a crucial influence on students because they were exposed to a life
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Introduction Chromatography is a technique used to separate a mixture into its individual components. In this experiment‚ chromatography is done by using a thin layer chromatography (TLC) plate and filter paper. The word ‘chromatography’ itself means the separation of colours. However‚ nowadays‚ both coloured and colourless compound are used in chromatography by various methods. In chromatography‚ the separation process of mixture is mainly based upon the polarity and molecular weight of sample
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Chromatography serves mainly as a tool for the examination and separation of mixtures of chemical substances. Chromatography is using a flow of solvent or gas to cause the components of a mixture to migrate differently from a narrow starting point in a specific medium‚ in the case of this experiment‚ filter paper. It is used for the purification and isolation of various substances. There are two phases in chromatography: 1. Stationary Phase – a solid that does not move. In this experiment was the
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Paper Chromatography Chromatography comes from the Greek word khromatos (color) and graphein (to write); i.e. paper chromatography is literally color writing on paper. This method tests the purity of compounds and identifies substances. This analytical process‚ despite having been replaced by the success of thin layer chromatography‚ still stands as a valuable teaching tool‚ and is nevertheless very common. This method is very useful because not only is it a relatively quick process‚ but also
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EXPERIMENT 5: CHROMATOGRAPHY Abstract Paper Chromatography uses a chromatogram paper as its stationary phase and the solvent as the mobile phase. Retention factor is the ratio of the distance travelled by the sample to the distance travelled by the solvent. This experiment aims to separate organic compounds‚ to compute Rf values and to identify unknown compounds using Rf values. The ten samples underwent paper chromatography to determine the components of the unknown sample. The mobile phase allowed
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