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What will be the percentage of sons having a normal vision if the father has normal vision and their mother is colour blind?

What will be the percentage of sons having a normal vision if the father has normal vision and their mother is colour blind? Correct Answer 0%

The percentage of sons having normal vision, if the father has normal vision and mother is colour blind is 0% because as colour blindness is a sex-linked trait, it means that the trait only transmits through X-chromosome. As the mother is colour blind, both her gametes will carry the gene for colour blindness, so none of their sons will have a normal vision.

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