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Biology Principles Lab II Fall 2020 Lab Report #2 Fast Plants Melvin Silberklang By: Rakeeb Basher Wisconsin Fast Plants
Abstract The fast plants' experiment explores Mendel's theory of inheritance, we did so by using Wisconsin fast plants. This experiment investigates whether the plants have cross-bred while analyzing the first and second-generation (F1 and F2) offspring. Mendel identified his second law of inheritance by observing two characters simultaneously. He Crossed two homozygous parents which produced dihybrids in the F1 generation. A dihybrid cross is between F1 dihybrids, which can regulate whether two specific characters are transferred to the offspring simultaneously or separately while conditioning recessive alleles. The phenotypes are determined, at this stage, and observed P1 was planted and observed for characteristics such as stem color and leaf color, completing the chi-squared test. The results are gathered by analyzing the F2 offspring through a chi-squared probability. To replicate Mendel’s results, the data has to produce the phenotypic ratio of 9:3:3:1. This would also mean that the likelihood of producing the phenotypic ratio will occur more than 5% out of 100% times. Introduction Gregor Mendel came up with the law of segregation and the law of independent assortment while breeding garden peas. The law of segregation states that when gametes are produced, two copies of each hereditary factor from each parent segregate so that offspring acquire one element. Mendel found that the law of independent assortment applies to genes with different nonhomologous chromosomes and sometimes to chromosomes that are far apart. The law of segregation is meant to explain how paired alleles separate and end up in two different gametes while in gamete formation. Each parent’s allele splits into two gametes; the alleles from each parent produces offspring’s. Every offspring inherits half of their traits from each parent. These characteristics are combined and passed down to all future generations. The genetics that
is donated from parents' offspring are known as genotypes. F1 generation is the product of P1 and P2 when it is crossed. When F1 plants are produced they show signs of dominant or recessive alleles, however, the F2 generation may only have recessive alleles. The hypothesis formulated as phenotypes of two inheritable genotypes under Mendel's law of independent assortment will assert a ratio of 9:3:3:1 for the phenotypes. The purple stem and green leaves have the dominant allele, while the non-purple stems with yellow-green leaves are the recessive allele. In the fast plants experiment, it is predicted that the class data and the collective will

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