在果蝇细胞中,由G、C、U三种碱基构成的核苷酸共有X种,其DNA分子

在果蝇细胞中,由GCU三种碱基构成的核苷酸共有X种,其DNA分子结构稳定性最低的时期是细胞周期的Y期,DNA分子复制出的2个分子彼此分离发生在Z期,则XYZ分别是

A5;分裂间期;有丝分裂后期和减数第一次后期

B6;分裂前期;有丝分裂后期和减数第一次后期

C5;分裂间期;有丝分裂后期和减数第二次后期

D3;分裂后期;有丝分裂后期和减数第二次后期

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