英语语法分析

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。

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。