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Red-green color blindness is caused by an X-linked recessive allele. Suppose a color-blind man and a woman with normal vision and no family history of color blindness married and had a daughter who was color blind and had Turner syndrome. Explain how this could happen citing which parent(s) could be responsible and where NDJ could occur.

User Junnel Gallemaso
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1 Answer

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12 votes
The woman could be heterozygous and could carry the trait but not have it herself.
User Roi
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