To__________ to do something means to do something unsuccessfully.
A:admit
B:fail
C:decide
遗传学检测甲、乙的细胞中基因组成时,发现甲为AaB,乙为AABb.对于甲缺少一个基因的原因,下列分析错误的是( )
我国省级行政单位有( )