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試卷名稱：109年 - 109 國立清華大學_碩士班考試入學試題_生命科學院甲組：生物學#125877
年份：109年
科目：研究所、轉學考(插大)◆生物學
20. A couple has a child with Down syndrome. The mother is 39 years old at the time of delivery. Which of the following is the most probable cause of the child's condition?
(A)The woman inherited this tendency from her parents.
(B)The mother had a chromosomal duplication.
(C) One member of the couple underwent nondisjunction in somatic cell production.
(D) One of the gametes in the mother most likely underwent nondisjunction during meiosis.
