A:that; that
B:what; where
C:that; where
D:what; that
基因型AaBb,经过减数分裂产生4种配子,有AB、Ab、aB、ab.其中AB和ab两种配子各占42%,这两种等位基因与染色体的关系是____ 与____ 连锁.
A: Good ____ (morning/evening).
B: Good evening.
同学们在初中生物课中做过许多实验.以下是洋洋同学对几个实验的认识,其中错误的是( )