monochorionic twinning

Can Identical Twins Have Two Placentas?

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Can Identical Twins Have Two Placentas? Monozygotic twins can be monochorionic or dichorionic, depending on when the split occurs. Occurs when two separate eggs are released from a woman’s ovaries and each is fertilised by two individual sperm cells. Both twins develop their own placentas and implant in the uterus, so are dichorionic (two placentas).

Is It Possible For A Boy Girl Pair Of Twins To Be Genetically Identical?

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Is It Possible For A Boy Girl Pair Of Twins To Be Genetically Identical? In 99.9% of cases boy/girl twins are non-identical. However, in some extremely rare cases resulting from a genetic mutation, identical twins from an egg and sperm which began as male (XY) can develop into a male / female pair. … An