Sex-Linked Inheritance Problem Set

Problem 1: Crossing a white-eyed female and red-eyed male fly

Correct!

In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? (White eyes are X-linked, recessive)

A. 100%

B. 25%

C. 50%

D. 75%

E. 0%

All of the females are red-eyed and heterozygous. All of the males are white-eyed and hemizygous.

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Updated: July 15, 1999
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