In Humans, XO Individuals Are Females with Turner Syndrome and XXY

question 70

Multiple Choice

In humans, XO individuals are females with Turner syndrome and XXY individuals are males with Klinefelter syndrome.Red green color blindness is caused by an X-linked recessive allele.Suppose a colorblind man and a normal woman with no family history of color blindness married and had a daughter who was colorblind and had Turner syndrome.Which event could have given rise to this offspring?

• A)nondisjunction at meiosis I in the mother
• B)nondisjunction at meiosis II in the mother
• C)nondisjunction at meiosis I in the father
• D)nondisjunction at meiosis II in the father
• E)nondisjunction at either meiosis I or meiosis II in the mother

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