Color blindness is caused by an X-linked recessive allele that is rare in humans. Suppose two parents have normal color vision and color-blind fathers. What is the chance that their second son will have normal vision?
Added by Eduardo E.
Step 1
- The father is color-blind, which means he has the genotype XcY, where Xc represents the color-blind allele and Y represents the normal allele. - The mother has normal color vision, which means she has the genotype XX. Show more…
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