In Drosophila, red eyes is a wild-type phenotype.  Several different genes affect eye color.  One allele causes purple eyes, and a different allele causes sepia eyes.  Both of these are recessive to red eye color.  When flies with purple eyes were crossed to flies with sepia eyes, all F1 flies had red eyes.  When the F1 offspring were allowed to mate, the F2 flies were as follows: 162 purple eyes 172 sepia eyes 58 purplish sepia eyes 478 red eyes   Explain this pattern of inheritance.  Use a chi square test to test the goodness of fit of your hypothesis with the data

Human Anatomy & Physiology (11th Edition)
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In Drosophila, red eyes is a wild-type phenotype.  Several different genes affect eye color.  One allele causes purple eyes, and a different allele causes sepia eyes.  Both of these are recessive to red eye color.  When flies with purple eyes were crossed to flies with sepia eyes, all F1 flies had red eyes.  When the F1 offspring were allowed to mate, the F2 flies were as follows:

162 purple eyes

172 sepia eyes

58 purplish sepia eyes

478 red eyes

 

Explain this pattern of inheritance.  Use a chi square test to test the goodness of fit of your hypothesis with the data

 

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