英文单词：chiasma

中文含义：交错点、交叉点、臂交叉点

英语词性：noun

美式音标：/kaɪˈæzmə/

同义词：crossing over, recombination

易混淆单词：chromosome, chromatid, chromatin

双语例句：

1. The formation of chiasma involves a complex series of events, including DNA replication, chromatin condensation, pairing and synapsis of homologous chromosomes, and crossing over between non-sister chromatids.

臂交叉的形成涉及一系列复杂的事件，包括DNA复制、染色质凝聚、同源染色体的成对和联接以及非姐妹染色单体之间的交换。

2. In meiosis, homologous chromosomes pair up and exchange segments of DNA at chiasmata.

在减数分裂中，同源染色体成对，并在臂交叉处交换DNA片段。