Pink-eye and albino are two recessive traits found in the deer mouse
Peromyscus maniculatus. In pink-eyed mice, the eye is devoid of color
and appears pink because of the blood vessels within it. Albino mice are
completely lacking color, both in their fur and in their eyes. F. H. Clark
crossed pink-eyed mice with albino mice; the resulting F1 had normal
coloration in their fur and eyes. He then crossed these F1 mice with mice
that were pink eyed and albino and obtained the following progeny. It is
hard to distinguish between mice that are albino and mice that are both
pink eyed and albino, so he combined these two
Clark. 1936. Journal of Heredity 27:259–260).
a. Give the expected numbers of progeny with each phenotype if the genes
for pink-eye and albino assort independently.
b. Use a chi-square test to determine if the observed numbers of progeny
fit the number expected with independent assortment.
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why doesnt this chi square value fit the number of expected with independent assortment?
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