oriented meiotic division

• 定向减数分裂

oriented meiotic division的用法和样例：

例句

1. Since crossing over can occur during the first meiotic division, it does allow for some genetic variation in the offspring.
   在第一次减数分裂的过程中可以发生交换现象，因而在后代中有遗传变化。
2. The processes of meiotic division of pollen mother cells were compared between male sterile plants and male fertile ones.
   摘要以萝卜雄性不育株与可育株为试材，比较研究了不育与可育花粉母细胞的减数分裂过程。