Color Blindness Problem Set

Problem 4: Genotype of Audrei's sister Caroline

What is the genotype of Audrei's sister Caroline, who has normal vision?

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

D. cannot be determined from the information given

Pedigree

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