When synapsis is complete the paired chromosomes are referred to as bivalents . 当联会完成的时候,那配成对的染色体叫做二价体。
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端处滑开,因此移端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)移端:发生在第一次减数分裂后期,染色体交叉向二价体染色体臂的末端移动的过程。
Synapsis ( pairing ) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents 联会(配对) :能产生单倍二价体的减数分裂前期,同源染色体的联合现象。