In metaphase 2, the centromeres contain two kinetochores that attach to spindle fibers from the centrosomes at opposite poles.

中期 2，着丝粒与丝连结。

The spindle fibers shorten and the centromere divides, so each chromosome becomes two separate chromatids.

丝缩短了，着丝粒分裂，所每个色体变成两个独色单体。

The microtubules invade the nuclear region after the nuclear envelope disintegrates, attaching to the chromosomes at the kinetochore.

核膜解体后，微管侵入核区，附着在着丝粒色体上。

The DNA is exactly replicated, and each chromosome now becomes two identical chromatids joined by the centromere.

DNA 被精确地复制了，每条色体现在变成了两条由着丝粒连接相同色单体。

This is followed by anaphase 2, in which the remaining centromeric cohesion is cleaved, allowing the sister chromatids to segregate.

紧随其后是后期 2，在这一阶段，着丝粒纵裂，姐妹色单体分离。