what are the three type of twins​

The word twins most obviously refers to two people ( or one of two people ) having the same uterus, usually.But not necessarily.Born on the same day.A fetus is called a single fetus when it is alone in the womb.Because the size of the mother's uterus is limited.Multiple pregnancies are less likely to have full-term births than single pregnancies, usually around 34 to 37 weeks.Because some premature births can have an impact on the health of babies.Twin births are handled more through special procedures than normal births.