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Fast plant - Lab Report Example

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Purple stem Wilscon fast plants consists of anthocyanin which is purple pigment found in several plants that include Wisconsin fast plant used in the experiment. The pigment can be observed best at 4-7 days. This could be observed at the plant hypocotyls and stems under the leaf…
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Download file to see previous pages The experiment was based on the general procedure as that of monohybrid activity. In this case the P1 and p2 plants are homozygous for two traits that include one dominant and one recessive. Four phenotypes were considered in this investigation of dihybrid genetics that include the following; Firstly, non-purple entails no expression of purple anthocyanin pigment in the plants (anthocyaninless) and the genotype of this mutant that is recessive is anl/anl. Secondly, Purple entails a pigment referred to as purple anthocyanin is visible on the hypocotyls. This trait is known to be wild type (dominant).The genotype is ANL/ANL Thirdly, the yellow Green; in this case, the homozygous (ygr/ygr) produces a plant that is light green than the normal green fast plant. Fourthly, normal green genotype is wild type (dominant) for yellow green and it is known as YGR. Purple stem Wilscon fast plants consists of anthocyanin which is purple pigment found in several plants that include Wisconsin fast plant used in the experiment (Williams, 1986). The pigment can be observed best at 4-7 days. This could be observed at the plant hypocotyls and stems under the leaf tips and cotyledons. It is well known that the single gene (anl) regulates whether the anthocyanin will be expressed or not. The (anl/anl) homozygous form is seen to be completely suppressed. In this case, the plant will appear bright green (non-purple).Yellow green gene (ygr) determines whether the leaves will be either green or yellow green in colour. The leaves will appear pale (yellow green in colour for recessive (ygr/ygr).But for YGR/YGR genotype the leaves will appear green and in this case, this genotype is the wild type. The test that is normally applied to show how well the observed ratios fit the expected statistical ratios is referred to as chi-square test. In this case, the observed number deviations is calculated from the ...Download file to see next pagesRead More
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