Placenta

Do twins share the same placenta?

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2007-06-28 14:03:38

Fraternal (non-identical) do not share the same placenta as they

are two babies formed from two eggs and two sperm. If they implant

close together they may appear to be one placenta, but they are

not. Identical twins formed from one egg and one sperm may split at

any stage from the two cell right up to late in embryonic

development which produces conjoined (Siamese) twins. The later in

embryonic development the split occurs the more likely they are to

share a placent.


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