图中减数分裂过程某阶段的描述，正确的是( ) A．同源染色体移向

图中减数分裂过程某阶段的描述，正确的是(　　)

A．同源染色体移向两极

B．非姐妹染色单体交换结束

C．减数第二次分裂的中期

D．姐妹染色单体排列在赤道板上

答案

题图为动物细胞减数第一次分裂中期图，同源染色体两两整齐地排列在赤道板上，其中非姐妹染色单体的互换在前期已经结束。

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