Your task will ultimately be to generate a hypothesis and test this hypothesis using a chi square test. There are four possible phenotypes for these kernels: Purple and Smooth Purple and Shrunken Yellow and Smooth Yellow and Shrunken The purple colour results from the formation of a purple pigment in the skin of the kernel. The gene locus for the colour trait is designated “R”. The wrinkled phenotype arises from a decrease in the amount starch produced within the kernel. The gene locus for the texture trait is designated “S”. Create a Punnett square for this cross and present the expected phenotypic ratio. Present the results in a table as dihybrids and determine the observed phenotypic ratio of purple/smooth to purple/shrunken to yellow/smooth to yellow/shrunken. Consider the plant as a whole rather than the individual cobs. Generate a null hypothesis and perform a chi square test on the data. Report the equation used, the chi square value, the degrees of freedom, and the resulting pvalue. Based on the assigned data, is the null hypothesis accepted or rejected? Does your chi square analysis of the corn data indicate that the genes for colour and texture are found on the same chromosome (linked) or on different chromosomes (independent)? Explain.
Your task will ultimately be to generate a hypothesis and test this hypothesis using a chi square test. There are four possible
Purple and Smooth
Purple and Shrunken
Yellow and Smooth
Yellow and Shrunken
The purple colour results from the formation of a purple pigment in the skin of the kernel. The gene locus for the colour trait is designated “R”. The wrinkled phenotype arises from a decrease in the amount starch produced within the kernel. The gene locus for the texture trait is designated “S”.
Create a Punnett square for this cross and present the expected phenotypic ratio.
Present the results in a table as dihybrids and determine the observed phenotypic ratio of purple/smooth to purple/shrunken to yellow/smooth to yellow/shrunken. Consider the plant as a whole rather than the individual cobs.
Generate a null hypothesis and perform a chi square test on the data. Report the equation used, the chi square value, the degrees of freedom, and the resulting pvalue. Based on the assigned data, is the null hypothesis accepted or rejected? Does your chi square analysis of the corn data indicate that the genes for colour and texture are found on the same chromosome (linked) or on different chromosomes (independent)? Explain.
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