Aim: To investigate the effect of one environmental factor on the phenotype of pea plants Background Information: Pea seeds are available with identical genetic information for height - tall or dwarf peas. These seeds can be used to demonstrate the effect of the environment on the final height of the pea plants. Tall or dwarf peas can be grown in identical conditions where all variables are kept constant apart from one environmental factor. Any differences in the height of the pea plants will be
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students did that‚ students label their six cell with their name and put their six cell tray on a water tray under florescent lights. For the next weeks‚ we took pictures‚ measured the plants‚ and look at the phenotype until the plants had pods. During week 1‚ students recorded the phenotypes of the plants. Between
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genes generate the Phenotype? “Every aspet of an organism is determined or influenced by the genes of the organism” What genes are‚ what they do‚ how they interact with eachother and the enviroment to generate a phenotype. Genes are segments of DNA that code for proteins or RNA molecules. These genes are the genetic material that is passed down from generation to generation in all species. The individual DNA segments each individual carries are known as their alleles or genotype. When two alleles
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Calculation of Allele and Genotype Frequencies & Hardy-Weinberg Equilibrium Theory INTRODUCTION Population geneticists study frequencies of genotypes and alleles within populations rather than the ratios of phenotypes that Mendelian geneticists use. By comparing these frequencies with those predicted by null models that assume no evolutionary mechanisms are acting within populations‚ they draw conclusions regarding the evolutionary forces in operation. In a constant environment‚ genes will continue
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Samuel Haleem Assignment 1 1. The Chi Square (c2) test: Phenotype Expected Ratio Expected Counts (Ei) Observed Counts (Oi) Deviation (di) = (Ei-Oi) di2 = (Ei-OI)2 di2/Ei Purple 3 429 430 -1 1 0.002 Yellow 1 143 142 1 1 0.007 a. c2 = S (di2/Ei) = 0.009 b. Results indicate that the null hypothesis supported. 2. Human Phenotypes: a. The data: Trait Dominant Phenotype Recessive Phenotype Ear Lobe 12 7 Pigment Distribution 1 18 Hairline 8 11 Little Finger 12 7 Tongue Roller 16 3 b. Do the ratios of the
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THE VICTORIA SCHOOL SANTIAGO JACOME LAB REPORT PTC BIOLOGY SL AIM: The aim of this lab is to analyze the genotype differences of classmates that are able to taste PTC‚ Thiourea and Sodium benzoate and determine the phenotypes found. Testing the ability to taste PTC has been a mainstay activity in human genetics for generations of teacher and students. The ability to taste PTC is inherited. Traditionally this is presented as a case of simple Mendelian inheritance involving a dominant allele for tasting
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Ethanol sensitivity in Drosophila melanogaster based on genotype Alexa Shumate Department of Biology Randolph-Macon College Ashland‚ Virginia Introduction With a better understanding of the genes and behaviors associated with ethanol sensitivity‚ there will be new treatments available for alcohol dependence. The main problem in determining what causes dependence to alcohol is whether it is an environmental factor or if it is the genes associated with ethanol
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the three kinds of genotype-environmental effects Scarr and McCartney assume and give an example of each. In a Passive genotype-environmental effect‚ the genetically related parents provide a rearing environment that is correlated with the genotype (genetic makeup of an organism) of the child. A child’s environment is correlated with their genes‚ which correlate with their parents’ genes because he or she is making decisions likely from their own preferences. Passive genotype-environmental effects
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Hemochromatosis is a recessive gene disorder in which there is an excessive amount of iron salts in the tissues which damages the tissues in the liver‚ causes discoloration of the skin and leads to diabetes mellitus. This may cause symptoms such as abdominal pain‚ weakness and weight loss. Due to excessive amount of iron in the liver‚ it can lead to heart failure. Another common disease is Porphyria Cutanea Tarda (PCT) which arises from a lack of the enzyme uroporphyrinogen decarboxylase. Most patients
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Axia College Material Appendix B Audience-Focused Communication Matrix Use the matrix to complete the information. Write 3-4 sentences for each item. What are some audience characteristics you need to consider? What communication channels would be appropriate and why? What would you do to ensure your message is effective? What are some considerations you must keep in mind given the diversity of the audience? Audience-Focused Communication Audience Audience Characteristics Channels
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