Prophase may be divided into successive stages termed leptotene, zygotene, pachytene, diplotene, and diakinesis.
前期可被分为连续的阶段：细线期、偶线期、粗线期、双线期和终变期。
In diplotene the pairs of chromatids begin to separate from the tetrad formed by the association of homologous chromosomes.
双线期时，配对的染色单体开始从四分体中分离，此时常可见染色体交叉。
In diplotene the pairs of chromatids begin to separate from the tetrad formed by the association of homologous chromosomes.
双线期时，配对的染色单体开始从四分体中分离，此时常可见染色体交叉。
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