-
Essay / Introduction to Mendelian Genetics
The specific purpose of this experiment is to inform students about Mendel's laws of genetics. To be more specific, this lab dives into Mendel's Laws of Segregation and Mandel's Law of Independent Assortment. At the end of this experiment, students will be able to prove or disprove Mendel's laws. Say no to plagiarism. Get a tailor-made essay on “Why violent video games should not be banned”? Get the original essay According to Cardinal et.al, this experiment is important because it allowed Mendel to propose the law of segregation and the law of independent assortment (Cardinal, et al., 2011). These laws have been taught to students ever since. Mendel's experiments provided true data that prove the laws are true. Our experiments included the same steps, so they had the same meaning. Two specific hypotheses accompany this experiment. 1. The experiment using mung bean plants will follow the principle of segregation. 2. The experiment using corn cobs will follow the principle of independent assortment. The hypotheses are based on information found in Mendel's experiments performed in the past. The main experiment that comes into play is Mendel's pea experiment. This helped explain the laws proposed by Mendel. Materials and Methods: Materials: Corn cob Mung bean plants Toothpick Methods: First, students were shown a picture of several mung bean plants, and asked to count the green plants and the white plants. plants (separately). After students calculated the correct number of green and white plants, many products were found (such as deviation, ratio, deviation2, chi, degree of freedom, and p-value). The students then followed the same steps to find all these products for the corn cobs given to each group. Students counted the number of smooth purple kernels, wrinkled purple kernels, smooth yellow kernels, and wrinkled yellow kernels. Once all of the previously stated products (deviation, ratio, deviation2, chi, degree of freedom, and p-value) were calculated for the corn cobs, students were asked to create a Punnett square which was used to find the percentages that will be given to each trait, as well as the ratios comparing genotypes as well as phenotypes (Stallsmith, 2014). Math behind all the answers/products/numbers for the mung bean plant experiment: Expected: Green = Total x . 75 and White = Total x 0.25 Green = 152 x 0.75 = 114 White = 152 x 0.25 = 38 Deviation = Observed – Expected Green: 123-114 = 9 White: 29-38 = -9 Ratio: observed / total x 100 = % Green: 123 / 152 x 100 = 80.92% -> 80% White: 29 / 152 x 100 = 19.07% -> 20%80:204:1 Deviation2 = d2Green: 92 = 81 White : -92 = 81Chi = deviation2 / expectedGreen: 81 / 114 = 0.711 White: 81 / 38 = 2.132 Degree of freedom = Total number of variables – 1 (green + white) 2 – 1 = value 1p = Based on the Chi number and The graph given in the laboratory notebook manualBased on the chi number/p value, the hypothesis of the mung bean experiment is true. The quantitative data found when carrying out the second part of the experiment (corn cob) prove that the second hypothesis is also correct. The chi number and p value will help prove or disprove the hypothesis depending on whether the differences are insignificant or significant. Discussion: The textbook provides in-depth explanations of the two laws of genetics. He says that the law of segregation “states that two alleles for an inherited trait segregate (separate from each other) during gamete formation and end up in different gametes” (Reece, 2016). This.