细胞学的英文：
cytology

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。

The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.
染色体交叉在减数分裂过程中成对的染色体之间的接触点产生一种交叉形状的构造，代表着基因互相交换的细胞表现形式