Sex-Linked Inheritance Problem Set

Problem 6: Hemophilia in humans

Hemophilia in humans is due to an X-chromosome mutation. What will be the results of mating between a normal (non-carrier) female and a hemophilac male?

A. half of daughters are normal and half of sons are hemophilic.

B. all sons are normal and all daughters are carriers.

C. half of sons are normal and half are hemophilic; all daughters are carriers.

D. all daughters are normal and all sons are carriers.

E. half of daughters are hemophilic and half of daughters are carriers; all sons are normal.

The Biology Project
University of Arizona
Updated: July 15, 1999
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