chiasmata

The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization.

有时交叉可以从二价体末处滑开，因此过程可以降低交叉频率。

Terminalization The movement of chiasmata to the end of the bivalent arms, a process that may occur during late prophase I of meiosis.

交叉)：生在一次裂后期，染色体交叉向二价体染色体臂的末动的过程。