pachytene stage

例句：

1. 1.The pachytene stage is a critical period in the development of gametes.
   晚减数分裂阶段是生殖细胞发育的关键时期。
2. 2. During the pachytene stage, the chromosomes undergo a complex rearrangement.
   在晚减数分裂阶段，染色体经历复杂的重排。
3. 3.Researchers have been studying the pachytene stage to better understand the process of gamete formation.
   研究人员一直在研究晚减数分裂阶段，以更好地理解生殖细胞形成的过程。