In addition, more information about the cause of monozygotictwins could be collected in the future by a straightforward check of the Numbers of placentas and sacs when the babies are born.
另外，将来有关单卵双胞胎原因更多的信息可以直接通过出生后核对胎盘和羊膜囊的数目来获得。
2
A trait or disease is called heritable if monozygotictwins are more similar to each other than dizygotic twins.
如果一种性状或疾病在同卵双胞胎中的同时发生的概率高于异卵双胞胎，那么这种性状或疾病是“可遗传的”。
3
While the effect of IGF on the ovaries likely involves fraternal, or dizygotic, twins, they were not distinguished from identical, or monozygotic, pregnancies in this study.