小芳女士很幸运地怀上了异卵双胞胎,但是,医生却告知她们夫妇均

小芳女士很幸运地怀上了异卵双胞胎,但是,医生却告知她们夫妇均属于半乳糖血症(人类的一种单基因隐性遗传病)的基因携带者。请你帮助预测,小芳怀孕的两个孩子是一男一女概率和至少有一个小孩患有半乳糖血症的概率是       

    A1/27/16     B1/27/32     C1/49/16     D1/47/16

答案

A

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