Peter likes pop music, but ________ his father ________ his mother likes it.
A:both, and
B:not only; but also
C:neither; nor
D:either, or
从西晋统一局面被破坏到隋朝统一全国,曾经统一过北方的政权是:____、____。
果蝇某性状受一对等位基因控制,突变型雄蝇只能产生雄性子代,下图为该性状遗传系谱图,已知Ⅱ-3无突变基因。下列说法错误的是( )