Comparison of zygote improvement in monozygotic and dizygotic twins. Inside the uterus, a greater part of monozygotic twins (sixty–70%) share a similar placenta but have different amniotic sacs. In 18–30% of monozygotic twins each fetus contains a separate placenta in addition to a independent amniotic sac. A small range (1–2%) https://directoryark.com/listings13314668/considerations-to-know-about-twin-horizon