Cultivated amaranth grains (Amaranthus caudatus) come in three colors: black, brown, and pale. Geneticists asked whether...

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Cultivated amaranth grains (Amaranthus caudatus) come in threecolors: black, brown, and pale. Geneticists asked whether thisphenotype could result from a dominant epistatic control. Crossingblack-seeded and pale-seeded A. caudatus populations (homozygouslines) gave the following counts of black, brown, and pale seeds inthe second generation (F2).
Seed coat color
Black
Brown
Pale
Seed count
344
82
31
In genetics, dominant epistasis should lead to 12/16 of all suchseeds being black, 3/16 Brown, and 1/16 pale. Do the experimentaldata above support the conclusion that seed coat color incultivated amaranth grains is due to dominant epistasis?
Please find the Ho, Ha, test statistic, df, exact probability ofthe test statistic, and conclusion relative to the hypothesis. Isthis a 1-tailed or 2-tailed test? Use Excel functions and mathcalculations, please.
I think you Chi-Squared for this, but I am not sure.

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3.6 Ratings (589 Votes)

Solution Chi square test for goodness of fit H0 The seed coat color in cultivated amaranth grains is due to dominant epistasis Ha The seed coat color in cultivated amaranth grains See Answer

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