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【单选题】
双眼皮基因为“A”。 巍巍的父母都是双眼皮，而巍巍是单眼皮。请问巍巍父母的基因组成为 [ ]
A.
AA与Aa
B.
Aa与Aa
C.
Aa与aa
D.
AA与aa
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Passage Two In 1997, devotees of home electronics eagerly awaited the DVD player, a new device that could play movies without videotape, and with greater clarity. It caught on even faste...
A.
die economic realities of its practicality
B.
robust economic growth
C.
economic problems of hi-tech companies
D.
ignorance of the technology
【单选题】人类的单眼皮和双眼皮是由一对遗传因子A和a所决定的.某男孩的双亲都是双眼皮,而他却是单眼皮.该男孩及其父母的遗传因子组成依次是( )
A.
aa、AA、Aa
B.
Aa、Aa、aa
C.
aa、Aa、Aa
D.
aa、AA、AA