chiasmata

英

美

n. 交叉
chiasma的复数

Crossing over The exchange of material between homologous chromatids by the formation of chiasmata.
交换：同源染色单体之间形成交叉时遗传物质的交换现象。
The chiasmata observed during the later stages of the meiotic prophase are cytological evidence of earlier cross-over events.
在减数分裂前期末所看到的交叉是在这以前发生了互换事件的细胞学证据。
Genetic recombination can occur without the formation of a chiasmata.
遗传重组在没有形成交叉的情况下，也可以发生。
Cytogenetics, which focus on the research of chromosome, is the product of the reciprocal chiasmata and combination of genetics and cytology, it aims to demonstrate basic science of organic heredity and variation cytology.
对染色体进行研究的细胞遗传学是遗传学与细胞学相互交叉与结合的产物，是旨在阐明生物有机体遗传与变异细胞学基础的科学。
Conclusion: Homologues pairing in mice is in different ways, the number of chiasmata and crossing over is various too.
结论：大多数同源染色体以不同方式进行配对，交叉互换的数目也各不相同。
Lateral element of synaptonemal complexes produced different numbers of chiasmata.
甜菜夜蛾联会复合体侧向单元间发生数目不等的交叉；