(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary);
"saying `I was not a little upset' when you mean `I was very upset' is an example of litotes"
Abnormal meiosis also was observed. 还观察到花粉母细胞异常减数分裂现象。
Meiosis of microspore mother cells is synchronous or unsynchronous. 小孢子母细胞减数分裂同步或不同步。