premeiotic association of chromosomes

例句：

1. 1. During the premeioticphase, the chromosomes are paired togetherto prepare for the meiosis.
   在配对阶段，染色体彼此配对以准备减数分裂。
2. 2. Theprocess of chromosome pairingis crucial for the successful completionof meiosis.
   染色体配对过程对于成功完成减数分裂至关重要。
3. 3.In some species, the chromosomes donot pair during the premeioticphase, which can lead to genetic instability.
   在某些物种中，染色体在配对阶段不配对，这可能导致遗传不稳定。