キアズマ

noun

chiasma; chiasmata

Biological term for the point of contact between paired chromosomes during meiosis where genetic crossover occurs. Also used in anatomy for the crossing of nerve fibers, e.g., optic chiasma.

• 減げん数すう分ぶん裂れつの前ぜん期きにキアズマが形けい成せいされる。

  Chiasmata form during prophase of meiosis.

• 視し交こう叉さはキアズマの一いち例れいである。

  The optic chiasm is an example of a chiasma.