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

Question

Quizplus · Accepted Answer

The Answer is C

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