Color Blindness Problem Set

Problem 7: Andrew and Jason

Tutorial to help you answer the question

Andrew and Jason have not been tested. What is the possibility that they will have the color perception defect?


We can predict the probability of inheriting the color perception defect. Based on this Punnett square, the probabilities for this couple are that 1/2 of the daughters will be red-green color blind and 1/2 will be carriers. 1/2 of the sons will be affected with the color perception defect and 1/2 will be normal.

The Biology Project
University of Arizona
Saturday, October 10, 1998
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