Sex-Linked Inheritance Problem Set

Problem 3: Predicting the offspring of a homozygous red-eyed female fly

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

A. 100%

A. 75%

C. 50%

D. 25%

E. 0%

All of the males and all of the females are red-eyed.

The Biology Project
University of Arizona
Updated: July 15, 1999
Contact the Development Team
All contents copyright © 1996-99. All rights reserved.