Genetics probability problem

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Question: A very common type of red/green colorblindness in humans is a X-linked recessive trait. A woman who is red/green colorblind marries a man with normal color vision. Their first daughter has normal color vision but is diagnosed with PKU. Based on this information, what is the most likely mode of inheritance of PKU? What is the probability that the couple's next child does not have PKU and has normal vision?

Reference no: EM1388474

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