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Mary's father is normal and has a normal genotype XY while her mother is the carrier of hemophilia and has one X of her genotype infected i.e. she is X*X.

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Lewis Streich

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3y ago

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Hemophilia is a sex-linked recessive disorder. Mary does not have the disease, but both of her brothers do. Neither of her parents have the disease. What are Mary's parent's genotypes (* indicates presence of the hemophilia allele)?

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