tetrad

Under the microscope, we spotted a tetrad of cells. ▶

在显微镜下，我们发现了一组四个细胞。

During meiosis, each tetrad allows genetic material to be exchanged between paired chromosomes, contributing to biological diversity.

在减数分裂过程中，每个四分体使配对染色体之间能够交换遗传物质，从而促进生物多样性。