基因分离定律的实质是( )
A:子二代出现性状分离
B:子二代性状分离比为3:1
C:测交后代性状的分离比为1:1
D:在形成配子时,等位基因发生分离
把下面的单词连成一句话。
People may have different opinions about MaYun, but I admire him. , he is a successful businessman.