(来学网)某男系X连锁显性遗传病患者,与正常女性结婚,产前诊断为一男婴,则该男婴发病概率为
  • A.
    (来学网)100%
  • B.
    (来学网)50%
  • C.
    (来学网)25%
  • D.
    (来学网)12.5%
  • E.
    (来学网)0