Color Blindness Problem Set

Problem 3: Barbara's genotype

We have determined that Audrei is homozygous recessive for the red-green color blind allele and that her father is hemizygous with a recessive allele. What is the mother's genotype? Remember that Audrei's mother does not have a color perception defect.

A. homozygous for the dominant, normal vision allele
B. heterozygous carrier of the red-green color blind allele
C. homozygous recessive for the red-green color blind allele


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University of Arizona
Saturday, October 10, 1998
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