Question

减数分裂中染色体.DNA.染色单体数目如何变化

Answer 1

染色体.DNA.染色单体

间期.减1(前期.中期后期末期)减2(前期.中期后期末期)分别为：

2n,4n.4n

2n,4n,4n;2n,4n,4n;2n,4n,4n;n,2n,2n;

n,2n,2n; n,2n,2n;2n,2n,0;n,n,0

给分吧,我辛辛苦苦打得