A Karyotype Shows That a Child Has Klinefelter Syndrome (47,XXY)

question 37

Multiple Choice

A karyotype shows that a child has Klinefelter syndrome (47,XXY) . If the child is also color- blind (due to a recessive X- linked allele) , despite his parents having normal color vision, in which parent and stage of meiosis did nondisjunction occur?

• A) father in meiosis I
• B) mother in meiosis I or II
• C) mother in meiosis II
• D) father in meiosis II
• E) mother in meiosis I

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