monoembryony

例句：

1. 1.Monoembryony is a rare condition in which only one embryo develops from a single fertilized egg.
   单胚生殖是一种罕见的状况，其中只有一个胚胎从单一的受精卵发育出来。
2. 2.In monoembryony, the development of the embryo is limited to the ovary or testis.
   在单胚生殖中，胚胎的发展仅限于卵巢或睾丸。
3. 3.Researchers have discovered that some species of fish exhibit monoembryony, which means they can only produce one offspring at a time.
   研究人员发现，某些鱼类表现出单胚生殖现象，这意味着它们只能同时产生一个后代。