Fast Plant Experiment Lab Report

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Term Paper- Fast Plant Experiment December 1,2014 General Biology Lab 1(BIO 2071) Lab Section 2 Teacher Assistant: Melanie Shields Group Member: Sara Fisher, Sadie Jacob Abstract Does the inheritance pattern of anthocyanin (purple pigment) follow Mendelian laws? The course sections will be subject to grow Brassica rapas plants. Brassica rapas grow at fast rate and are ideal for the Mendelian Genetics. Each pair of students will plant and grow F1 generation seeds. Once, grown the students will attempt to isolate the Anthocyanin in F2 generation plants. If anthocyanin is inherited as a dominant trait, then the F2 generation will follow Mendelian genetics resulting in a 3:1 phenotypic ratio. The results suggest that there was a statistical…show more content…
The scientists took the rapid flowering plants and began to raising them in high density areas. The goal was to cross over the traits of fast reproduction between a Brassica and a radish. The end result was a concept known as Rapid-Cycling. The ability to cross over trait from two species is not only seen in this experiment but also in our current experiment on Brassica rapa. The goal of our experiment is to cross over the recessive trait for purple stem to dominate green stem. The density of our experiment will differ in that we only plant six plants. The observation skills in the Brassica rapa experiment would be our primary tool for collecting data. The hypothesis of our experiment is to see a mixture of phenotype. A primarily recessive phenotype and a dominate phenotype of all green stems, but also a phenotypes with a mixture expressing both phenotypes. Currently the two primary evidence sources used on the prediction are prudent squares and the success of rapid cycling. The prudent square gives data for a prediction of the phenotypes present in the offspring based on that of the two parents. We know that the likely hood for the purple stem to be partially expressed will increase with the number of generations. The Rapid-cycling experiment presents information on the ability Brassica has for crossing…show more content…
As Figure 3.2 represents the observed phenotypes for the F2 generation, where 253 stems were green and 614 stems contained purple based on a section and figure 3.3 represents observations as a course. The information from Figure 3.2 , Figure 3.3 and the hypothesis of the experiment, The presence of purple pigment (anthocyanin) is inherited as a dominant trait and follows Mendelian laws, were taken and imputed into a Chi-Square using the equitation ; X2=(o-e)2/e. The o variable is found using the observations and e can be found by taking the o variable and multiplying by 0.75. The decimal 0.75 is applied based on the Mendelian law where three of the four plants demonstrate the dominate phenotype. The answer to the overall equation, highlighted in Table 3.1 and Table 3.2 was then taken and compared to the value of p= 0.05 in Figure 1.4. P=0.05 is found by taking the overall equations sums and entering them into Figure 3.3 and using the degree of freedom of n=1.Since the value for a p=0.05 is 3.84, there is a significant difference in the

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