Can identical twins be in different placentas

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One placenta and one amniotic sac. This is the riskiest and rarest type of twin pregnancy. Fetal complications can arise due to tangling of the umbilical cords or an imbalance in nutrients, blood or other vital life supporting systems.

Do I need to double my caloric intake during a twin pregnancy? Do I need to take different prenatal vitamins for twins? Will I need to visit my doctor more frequently? Do I have to see a maternal-fetal medicine specialist for a twin pregnancy? Are all twin pregnancies delivered preterm? Can bed rest reduce the risk of preterm delivery? Is labor and delivery significantly different with twins? Home Pregnancy Finding out you're pregnant Back to Finding out you're pregnant.

Pregnant with twins. Different types of twins One-third of all twins will be identical and two-thirds non-identical. Identical twins Identical monozygotic twins happen when a single egg zygote is fertilised. The egg then divides in 2, creating identical twins who share the same genes. Non-identical twins Non-identical dizygotic twins happen when 2 separate eggs are fertilised and then implant into the womb uterus.

These non-identical twins are no more alike than any other 2 siblings. Non-identical twins are more common. When the situation arises in which two fetuses have to share a single placenta, complications may sometimes develop.

Identical twins that share a single placenta are called monochorionic twins MC. As a result, although identical twins usually share the same genetic material, they may actually grow differently.