A cross of fruit flies was conducted. White-eyed males were crossed with pink-ey

Question

A cross of fruit flies was conducted. White-eyed males were crossed with pink-eyed females. All F1 flies had normal eye color. F1's were intercrossed yielding F2 flies as follows: 890 wildtype females, 455 wildtype males, 605 white-eyed males, 140 pink-eyed males, and 310 pink-eyed females. Give a genetic explaination consistent with this data.
a. white is autosomal recessive and epistatic pink
b. pink and white are x-linked recessive with white dominant to pink
c. white is x-linked recessive, pink is autosomal recessive; white is recessive epistatic to pink
d. pink is autosomal recessive and dominant over white

Explanation / Answer

c. white is x-linked recessive, pink is autosomal recessive; white is recessive epistatic to pink

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