Genetic recombination can occur without the formation of a chiasmata. 遺傳重組在沒(méi)有形成交叉的情況下,也可以發(fā)生。
The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization. 有時(shí)交叉可以從二價(jià)體末端處滑開(kāi),因此移端過(guò)程可以降低交叉頻率。