Red-green color blindness is X-linked recessive. A husband and wife have normal vision, although both of their fathers are colorblind. What is the probability that their first child will be a daughter who is colorblind? a. 0 b. 1/8 c. 1/4 d. 1/2 e. 1
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Since both of their fathers are colorblind, both the husband and wife must be carriers of the colorblind gene. This means their genotypes are XcX and XCY, where Xc represents the colorblind allele and Y represents the male chromosome. Show more…
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