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Biology Principles Lab IIFall 2020Lab Report #2 Fast PlantsMelvin SilberklangBy: Rakeeb BasherWisconsin Fast Plants
AbstractThe fast plants' experiment explores Mendel's theory of inheritance, we did so by usingWisconsin fast plants. This experiment investigates whether the plants have cross-bred whileanalyzing the first and second-generation (F1 and F2) offspring. Mendel identified his secondlaw of inheritance by observing two characters simultaneously. He Crossed two homozygousparents 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 offspringsimultaneously or separately while conditioning recessive alleles. The phenotypes aredetermined, at this stage, and observed P1 was planted and observed for characteristics such asstem color and leaf color, completing the chi-squared test. The results are gathered by analyzingthe F2 offspring through a chi-squared probability. To replicate Mendel’s results, the data has toproduce the phenotypic ratio of 9:3:3:1. This would also mean that the likelihood of producingthe phenotypic ratio will occur more than 5% out of 100% times.IntroductionGregor Mendel came up with the law of segregation and the law of independentassortment while breeding garden peas. The law of segregationstates that when gametes areproduced, two copies of each hereditary factor from each parent segregate so that offspringacquire one element. Mendel found that the law of independent assortmentapplies to genes withdifferent nonhomologous chromosomes and sometimes to chromosomes that are far apart. Thelaw of segregation is meant to explain how paired alleles separate and end up in two differentgametes while in gamete formation. Each parent’s allele splits into two gametes; the alleles fromeach 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 P1and P2 when it is crossed. When F1 plants are produced they show signs of dominant orrecessive alleles, however, the F2 generation may only have recessive alleles. The hypothesisformulated as phenotypes of two inheritable genotypes under Mendel's law of independentassortment will assert a ratio of 9:3:3:1 for the phenotypes. The purple stem and green leaveshave the dominant allele, while the non-purple stems with yellow-green leaves are the recessive

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Mendelian Inheritance

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