Di-di twins are the most common and lowest-risk type of twins. They each have their own placenta and amniotic sac. Most di-di twins are fraternal, but they can be identical.

Dichorionic (Di-Di) twins each have their own placenta and amniotic sac; ... This type of twin is extremely rare – there are only two known sets of semi-identical twins. Mirror image twins.

More types of twins exist than previously thought. Beyond identical and fraternal, there's a rare third type. Twin pregnancies have unique risks and outlooks.

From identical to fraternal and beyond. Medically reviewed by Rachel Gurevich, RNMedically reviewed by Rachel Gurevich, RN One of the first things pregnant people wonder is whether or not they'll ...

There are two types of twins, dizygotic and monozygotic. ... (DiDi), meaning they have separate placentas and amniotic sacs. Each child develops independently with less risk to the fetuses.

The two most common types of twins are dizygotic (fraternal) and monozygotic (identical). Learn more about them and what may possibly cause multiple births.