In corn, purple kernels (P) are dominant over yellow kernels (p) and starchy kernels (Su) are dominant over sugary kernels (su). A corn plant grown from a purple and starchy kernel is crossed with a plant grown from a yellow and sugary kernel, and the following progeny (kernels) are produced: Phenotype Number purple, starchy 150 purple, sugary 142 yellow, starchy 161 yellow, sugary 115 Formulate a hypothesis about the genotypes of the parents and offspring in this cross. Perform a chi-square goodness-of-fit test comparing the observed progeny with the numbers expected based on your genetic hypothesis. What conclusion can you draw based on the results of your chi-square test? Can you suggest an explanation for the observed results?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In corn, purple kernels (P) are dominant over yellow kernels (p) and
starchy kernels (Su) are dominant over sugary kernels (su). A corn
plant grown from a purple and starchy kernel is crossed with a plant
grown from a yellow and sugary kernel, and the following progeny
(kernels) are produced:
Phenotype Number
purple, starchy 150
purple, sugary 142
yellow, starchy 161
yellow, sugary 115
Formulate a hypothesis about the genotypes of the parents and
offspring in this cross. Perform a chi-square goodness-of-fit test
comparing the observed progeny with the numbers expected based on
your genetic hypothesis. What conclusion can you draw based on the
results of your chi-square test? Can you suggest an explanation for the
observed results?

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