交叉在交换时一对染色体出现的交叉型结构在减数分裂的双线期可以在显微进镜下看到
The crossed structure that appears in a pair of chromosomes during exchange can be observed under a microscope during the double-line phase of meiosis
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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