Twins!! There are dichorionic/diamniotic twins (di/di), monochorionic/diamniotic (mo/di) and monochorionic/monoamniotic (mo/mo). Di/di twins can be dizygotic (not identical) or monozygotic (identical). Monochorionic twins are monozygotic and identical. (There is a rare phenomenon called heterokaryotypic twins that can result in non-identical twins but that's for another time)! It's very important to know what type of twins you have! #twins #twinning #identicaltwins #monozygotictwins #dizygotictw

Homecoming for Rare Set of Monoamniotic Identical Twins

My sister and I are ‘Momo twins’ — we were given a 1% chance of survival at birth but now we’re 24

Guide to Mo/Mo Twins: Understanding Development and Risks